All tools
168 free tools across 6 categories — all running 100% in your browser.
168 of 168 tools shown
PDF Tools
Merge, split, compress and convert PDF files — right in your browser.
Merge PDF Combine multiple PDF files into one document, free and instantly. Files are merged in your browser — no uploads, no signup, no watermarks. Split PDF Split a PDF into separate files or extract specific pages. Free, no signup, and processing happens entirely in your browser. Compress PDF Shrink large PDF files without losing readability. Choose compression strength and download instantly — files never leave your browser. PDF to JPG Convert every page of a PDF to high-quality JPG or PNG images. Free, instant, and processed entirely in your browser — no uploads. PDF to Word Convert a PDF into an editable Word (DOCX) document. Text is extracted and rebuilt in your browser — no uploads, free and unlimited. JPG to PDF Convert JPG, PNG and WebP images into a single PDF. Set page size and margins, reorder images, download instantly — 100% in your browser. Rotate PDF Rotate all pages of a PDF by 90, 180 or 270 degrees, or rotate individual pages. Free, instant, and fully browser-based. Organize PDF Pages Visually arrange a PDF: delete pages you don't need and drag pages into a new order. Free, private, and processed in your browser. Extract PDF Text Pull all text out of a PDF and copy or download it as .txt. Fast, free, and processed entirely in your browser — no uploads. Sign PDF Draw your signature and place it anywhere on a PDF. Free, private and instant — the signed file is created in your browser, never uploaded. PDF to PNG Convert PDF pages to sharp, lossless PNG images — up to 300 DPI for A4 printing. Free, instant, batch zip download, all in your browser. Extract PDF Pages Extract selected pages from a PDF locally in your browser.
Image Tools
Compress, convert, resize and edit images without uploading them anywhere.
Image Compressor Shrink JPG, PNG and WebP images up to 90% smaller with a target file size or quality slider. Free, no upload, batch supported. Image Converter Convert between PNG, JPG and WebP formats instantly. Batch conversion, quality control, and zero uploads — all in your browser. Image Resizer Resize images by pixels or percentage with aspect-ratio lock. Batch resize, format choice, and zero uploads — runs in your browser. Image Cropper Crop images with a visual editor: drag the frame, use aspect ratios like 1:1 or 16:9, and download. Free and fully browser-based. Image to Base64 Encode any image to a Base64 data URI for CSS or HTML. Instant preview, one-click copy, zero uploads — works entirely in your browser. Watermark Image Add a text watermark to photos in bulk: pick font size, opacity, color and position. Free, batch ready, and never uploaded. HEIC to JPG Convert HEIC and HEIF photos to JPG or PNG right in your browser. Batch conversion, quality control, zero uploads — free, fast and unlimited. AVIF to JPG Convert AVIF images to JPG in your browser — batch supported, no upload, no limits. Modern-format photos become universally compatible JPGs instantly. AVIF to PNG Convert AVIF images to lossless PNG right in your browser. No upload, no signup, batch supported — transparency is preserved perfectly. Image to Text (OCR) Extract text from images and screenshots with OCR. English, Spanish, Chinese and more — runs locally in your browser, no uploads. EXIF Viewer Read EXIF metadata from photos: camera, lens, exposure, ISO, focal length, GPS coordinates and dates. Runs locally — photos are never uploaded. Remove EXIF Data Strip EXIF metadata — including GPS location — from photos before sharing. Batch supported, visually identical quality, 100% in your browser. Remove Background (AI) AI background removal that runs entirely in your browser — no upload, no signup, no watermark. Transparent PNG cutout of people and products. SVG to PNG Convert pasted SVG markup or an SVG file to a PNG at custom dimensions. Choose transparency or a background color — local and free. WebP to JPG Converter Convert WebP images to JPG locally for broader photo compatibility. JPG to WebP Converter Convert JPG images to compact WebP files locally for web publishing. PNG to JPG Converter Convert PNG images to JPG locally when a smaller photo format is useful. JPG to PNG Converter Convert JPG images to PNG locally for lossless graphics workflows.
Design Tools
Color converters, palette extraction and accessibility checks for designers.
Color Converter Convert colors between HEX, RGB and HSL instantly. Pick or paste any format, copy all of them, and explore tints and shades — fully client-side. Color Palette from Image Extract dominant colors from any image into a palette you can copy as HEX or RGB. Click the image to pick exact pixels — all local, no upload. WCAG Contrast Checker Test text and background colors against WCAG 2.1 AA and AAA contrast thresholds. Live ratio, sample preview and clear pass/fail — client-side. YouTube Thumbnail Maker Create a 16:9 YouTube thumbnail with custom title, subtitle, colors and background image. Export a crisp 1280×720 PNG directly in your browser. Favicon Generator Generate favicon PNGs, an SVG favicon and a web app manifest from text, emoji or an image. Free, private and processed in your browser. OG Image Generator Create a 1200×630 Open Graph image for websites, blogs and social sharing. Add title, description, colors and a local background image, then download PNG. GitHub Social Preview Create a GitHub repository social preview image at 1280×640. Add repo name, tagline, language and status, then download a polished PNG locally.
Developer Tools
Formatters, encoders and generators for everyday development work.
JSON Formatter Format, validate and minify JSON with syntax highlighting and clear error messages. Free, instant, and fully client-side. QR Code Generator Create QR codes for URLs, text, WiFi, email or phone. Adjust size and colors, download as PNG or SVG — free, no watermark. Base64 Encoder / Decoder Encode text to Base64 or decode Base64 back to text. UTF-8 safe, instant, with one-click copy — fully client-side. URL Encoder / Decoder Encode or decode URLs and query strings with proper percent-encoding. Handles spaces, symbols and Unicode — instant and client-side. Hash Generator Generate SHA-256, SHA-384, SHA-512, SHA-1 and MD5 hashes from text instantly. Compare checksums and verify integrity — client-side only. UUID Generator Generate one or hundreds of cryptographically random UUID v4 identifiers instantly. Bulk mode, one-click copy — fully client-side. Password Generator Create strong random passwords with one click. Choose length and character sets, see the strength estimate, copy instantly — generated locally. Timestamp Converter Convert Unix timestamps to human-readable dates and back. Live current-epoch clock, UTC and local time, milliseconds support — fully client-side. CSV ⇄ JSON Converter Convert CSV to JSON or JSON to CSV instantly. Handles quoted fields, custom delimiters and header rows — paste, convert, copy. Fully client-side. Token Counter Count tokens with exact OpenAI tokenizers (o200k/cl100k) plus Claude & Gemini estimates. Characters, words, sentences — 100% client-side. LLM API Cost Calculator Compare AI API costs for GPT-5, GPT-4o, Claude, Gemini, DeepSeek and more. Enter tokens and volume to see per-call and monthly estimates locally. vCard QR Generator Create a QR code that saves your contact card (vCard) when scanned. Name, phone, email, company and more — generated locally, no signup. QR Code Scanner Scan and decode QR codes from an uploaded image or your camera — free, private, no app install. Works fully in your browser. AI Prompt Builder Build clear, reusable AI prompts for ChatGPT, Claude, Gemini and image models. Use practical templates, constraints and output formats — private and local. JWT Decoder Decode and inspect JSON Web Tokens in your browser. View header, payload, claim dates and signature text without uploading credentials or verifying a signature. Regex Tester Test JavaScript regular expressions against sample text with match positions, capture groups and named groups. Fast, private and browser-based. JSON to TypeScript Convert JSON examples and API responses into clean TypeScript interfaces with nested objects, arrays and safe property names. Runs locally in your browser. Cron Expression Generator Build, paste and validate five-field Unix cron expressions with ranges, steps and weekday names. See a plain-language explanation and next run times locally. UTM Builder Build clean UTM campaign URLs for Google Analytics, email, social and ads. Encode parameters correctly in your browser — free and private. Meta Tag Generator Generate title, description, canonical, Open Graph and Twitter Card HTML tags with a live search preview. Free, private and easy to copy. Subnet Calculator Calculate IPv4 subnet ranges from CIDR notation. See network, broadcast, usable hosts, subnet mask and wildcard mask instantly in your browser. Fake Data Generator Generate synthetic names, emails, usernames, phones, companies, cities and UUIDs as JSON or CSV for testing. Free, local and no signup. Password Strength Checker Check password length, character variety, estimated entropy and offline crack-time range in your browser. Never upload a password or use production secrets. MIME Type Lookup Look up common MIME types for HTML, JSON, PDF, images, audio, video and office files by extension or content type. Fast and offline. WiFi QR Code Generator Create a WiFi QR code from a network name and password. The payload stays in your browser and is never redirected or tracked. URL QR Code Generator Turn a URL into a static QR code with local PNG and SVG downloads. No account, redirect or tracking layer. QR Code with Logo Generator Create a QR code with a centered logo, high error correction and local PNG or SVG downloads. Text to QR Code Generator Convert plain text, notes or Unicode characters into a static QR code locally in your browser. Email QR Code Generator Create a static mailto QR code with an optional subject and message, entirely in your browser. SMS QR Code Generator Create a static SMS QR code with a phone number and optional message without sending either value. Phone QR Code Generator Turn a phone number into a static tap-to-call QR code locally, with no redirect or scan tracking. Location QR Code Generator Create a geo QR code from latitude and longitude locally without uploading or tracking the location. Barcode Generator Generate Code 128, EAN-13 or UPC-A barcodes with checksum validation and local SVG or PNG export. Code 128 Barcode Generator Generate a Code 128 barcode for printable product, inventory or logistics labels without uploading the value. EAN-13 Barcode Generator Generate and validate an EAN-13 barcode with automatic checksum calculation in your browser. UPC-A Barcode Generator Generate and validate a UPC-A barcode with automatic checksum calculation and local image export.
Text Tools
Counters, converters and utilities for working with plain text.
Markdown to HTML Convert Markdown to readable HTML with headings, links, emphasis, lists, quotes and code blocks. Live preview, copy and download — local and free. Email Signature Generator Create a professional HTML email signature for Gmail, Outlook and other clients. Customize contact details and color, then copy the HTML locally. Word Counter Count words, characters, sentences, paragraphs and reading time in real time. Free, instant keyword density — fully client-side. Case Converter Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more. One click, instant, client-side. Text Diff Compare two blocks of text and highlight every addition, deletion and change. Line-level diff with clear colors — fully client-side. Lorem Ipsum Generator Generate lorem ipsum placeholder text by paragraphs, sentences or words. Classic Latin filler for designs and mockups — client-side. Citation Generator Generate citations in APA 7, MLA 9 and Chicago style for websites, books and journal articles. Instant, private, no signup. Subtitle Converter Convert SRT subtitles to WebVTT, VTT to SRT, or extract clean text. Shift timing to fix sync issues — free, private and browser-based. AI UGC Script Generator Create an editable UGC video script with hooks, problem framing, proof and CTA for TikTok, Reels and short ads. Free, private and browser-based. YouTube Title Generator Generate practical YouTube title ideas from a topic, keyword and audience. Get how-to, review, story and list formats instantly in your browser. Social Caption Generator Generate editable social captions and relevant hashtags for TikTok, Instagram, LinkedIn and X. Local, free and easy to copy.
Calculators & Converters
Everyday calculators and unit converters — instant answers, nothing tracked.
Age Calculator Calculate your exact age in years, months, days — even hours, minutes and seconds. Next-birthday countdown included. Free, instant, private. Percentage Calculator Three percentage calculators in one: X% of a number, one number as a percent of another, and percentage increase or decrease. Instant, client-side. Unit Converter Convert length, weight, temperature, speed, area, volume, data storage, time, pressure, energy, power and angle units instantly in your browser. GPA Calculator Calculate your semester or cumulative GPA on the 4.0 scale. Letter or percentage grades, weighted by credits — instant and private. Reading Time Calculator Convert word counts into reading and speaking time. Adjustable speed, sentences and paragraphs included — instant and private. Invoice Generator Create a professional invoice with line items, tax and totals, then download it as a clean PDF. No signup, no watermark — built in your browser. inches to centimeters Convert Inch (in) to Centimeter (cm) with a precise browser calculator. See the formula, examples and a common values table locally. centimeters to inches Convert Centimeter (cm) to Inch (in) with a precise browser calculator. See the formula, examples and a common values table locally. millimeters to inches Convert Millimeter (mm) to Inch (in) with a precise browser calculator. See the formula, examples and a common values table locally. inches to millimeters Convert Inch (in) to Millimeter (mm) with a precise browser calculator. See the formula, examples and a common values table locally. feet to meters Convert Foot (ft) to Meter (m) with a precise browser calculator. See the formula, examples and a common values table locally. meters to feet Convert Meter (m) to Foot (ft) with a precise browser calculator. See the formula, examples and a common values table locally. kilometers to miles Convert Kilometer (km) to Mile (mi) with a precise browser calculator. See the formula, examples and a common values table locally. miles to kilometers Convert Mile (mi) to Kilometer (km) with a precise browser calculator. See the formula, examples and a common values table locally. yards to meters Convert Yard (yd) to Meter (m) with a precise browser calculator. See the formula, examples and a common values table locally. meters to yards Convert Meter (m) to Yard (yd) with a precise browser calculator. See the formula, examples and a common values table locally. inches to feet Convert Inch (in) to Foot (ft) with a precise browser calculator. See the formula, examples and a common values table locally. feet to inches Convert Foot (ft) to Inch (in) with a precise browser calculator. See the formula, examples and a common values table locally. kilograms to pounds Convert Kilogram (kg) to Pound (lb) with a precise browser calculator. See the formula, examples and a common values table locally. pounds to kilograms Convert Pound (lb) to Kilogram (kg) with a precise browser calculator. See the formula, examples and a common values table locally. grams to ounces Convert Gram (g) to Ounce (oz) with a precise browser calculator. See the formula, examples and a common values table locally. ounces to grams Convert Ounce (oz) to Gram (g) with a precise browser calculator. See the formula, examples and a common values table locally. kilograms to stone Convert Kilogram (kg) to Stone (st) with a precise browser calculator. See the formula, examples and a common values table locally. stone to kilograms Convert Stone (st) to Kilogram (kg) with a precise browser calculator. See the formula, examples and a common values table locally. pounds to stone Convert Pound (lb) to Stone (st) with a precise browser calculator. See the formula, examples and a common values table locally. stone to pounds Convert Stone (st) to Pound (lb) with a precise browser calculator. See the formula, examples and a common values table locally. celsius to fahrenheit Convert Celsius (°C) to Fahrenheit (°F) with a precise browser calculator. See the formula, examples and a common values table locally. fahrenheit to celsius Convert Fahrenheit (°F) to Celsius (°C) with a precise browser calculator. See the formula, examples and a common values table locally. celsius to kelvin Convert Celsius (°C) to Kelvin (K) with a precise browser calculator. See the formula, examples and a common values table locally. kelvin to celsius Convert Kelvin (K) to Celsius (°C) with a precise browser calculator. See the formula, examples and a common values table locally. square-feet to square-meters Convert Square foot (ft²) to Square meter (m²) with a precise browser calculator. See the formula, examples and a common values table locally. square-meters to square-feet Convert Square meter (m²) to Square foot (ft²) with a precise browser calculator. See the formula, examples and a common values table locally. acres to square-feet Convert Acre (ac) to Square foot (ft²) with a precise browser calculator. See the formula, examples and a common values table locally. square-feet to acres Convert Square foot (ft²) to Acre (ac) with a precise browser calculator. See the formula, examples and a common values table locally. hectares to acres Convert Hectare (ha) to Acre (ac) with a precise browser calculator. See the formula, examples and a common values table locally. acres to hectares Convert Acre (ac) to Hectare (ha) with a precise browser calculator. See the formula, examples and a common values table locally. liters to gallons Convert Liter (l) to Gallon (US) with a precise browser calculator. See the formula, examples and a common values table locally. gallons to liters Convert Gallon (US) to Liter (l) with a precise browser calculator. See the formula, examples and a common values table locally. milliliters to cups Convert Milliliter (ml) to Cup (US) with a precise browser calculator. See the formula, examples and a common values table locally. cups to milliliters Convert Cup (US) to Milliliter (ml) with a precise browser calculator. See the formula, examples and a common values table locally. liters to quarts Convert Liter (l) to Quart (US) with a precise browser calculator. See the formula, examples and a common values table locally. quarts to liters Convert Quart (US) to Liter (l) with a precise browser calculator. See the formula, examples and a common values table locally. cups to gallons Convert Cup (US) to Gallon (US) with a precise browser calculator. See the formula, examples and a common values table locally. gallons to cups Convert Gallon (US) to Cup (US) with a precise browser calculator. See the formula, examples and a common values table locally. kilometers-per-hour to miles-per-hour Convert Kilometer/hour (km/h) to Mile/hour (mph) with a precise browser calculator. See the formula, examples and a common values table locally. miles-per-hour to kilometers-per-hour Convert Mile/hour (mph) to Kilometer/hour (km/h) with a precise browser calculator. See the formula, examples and a common values table locally. knots to miles-per-hour Convert Knot (kn) to Mile/hour (mph) with a precise browser calculator. See the formula, examples and a common values table locally. miles-per-hour to knots Convert Mile/hour (mph) to Knot (kn) with a precise browser calculator. See the formula, examples and a common values table locally. megabytes to gigabytes Convert Megabyte (MB) to Gigabyte (GB) with a precise browser calculator. See the formula, examples and a common values table locally. gigabytes to megabytes Convert Gigabyte (GB) to Megabyte (MB) with a precise browser calculator. See the formula, examples and a common values table locally. kilobytes to megabytes Convert Kilobyte (KB, 1000 B) to Megabyte (MB) with a precise browser calculator. See the formula, examples and a common values table locally. megabytes to kilobytes Convert Megabyte (MB) to Kilobyte (KB, 1000 B) with a precise browser calculator. See the formula, examples and a common values table locally. hours to minutes Convert Hour (h) to Minute (min) with a precise browser calculator. See the formula, examples and a common values table locally. minutes to hours Convert Minute (min) to Hour (h) with a precise browser calculator. See the formula, examples and a common values table locally. days to hours Convert Day (d) to Hour (h) with a precise browser calculator. See the formula, examples and a common values table locally. hours to days Convert Hour (h) to Day (d) with a precise browser calculator. See the formula, examples and a common values table locally. weeks to days Convert Week (wk) to Day (d) with a precise browser calculator. See the formula, examples and a common values table locally. days to weeks Convert Day (d) to Week (wk) with a precise browser calculator. See the formula, examples and a common values table locally. bar to psi Convert Bar (bar) to Pound per square inch (psi) with a precise browser calculator. See the formula, examples and a common values table locally. psi to bar Convert Pound per square inch (psi) to Bar (bar) with a precise browser calculator. See the formula, examples and a common values table locally. kilowatt-hours to kilojoules Convert Kilowatt-hour (kWh) to Kilojoule (kJ) with a precise browser calculator. See the formula, examples and a common values table locally. kilojoules to kilowatt-hours Convert Kilojoule (kJ) to Kilowatt-hour (kWh) with a precise browser calculator. See the formula, examples and a common values table locally. kilowatts to horsepower Convert Kilowatt (kW) to Horsepower (hp) with a precise browser calculator. See the formula, examples and a common values table locally. horsepower to kilowatts Convert Horsepower (hp) to Kilowatt (kW) with a precise browser calculator. See the formula, examples and a common values table locally. degrees to radians Convert Degree (°) to Radian (rad) with a precise browser calculator. See the formula, examples and a common values table locally. radians to degrees Convert Radian (rad) to Degree (°) with a precise browser calculator. See the formula, examples and a common values table locally. Percentage Change Calculator Use this percentage change calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Percentage Increase Calculator Use this percentage increase calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Discount Calculator Use this discount calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Tip Calculator Use this tip calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Margin Calculator Calculate gross profit and margin from revenue and cost. Compare margin with markup using a clear 80-cost, 100-revenue example. Markup Calculator Use this markup calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Profit Calculator Use this profit calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Break-even Calculator Find break-even units from fixed costs, price and variable cost. See a 100-unit example and why non-positive contribution has no positive break-even. ROI Calculator Use this roi calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. ROAS Calculator Calculate revenue divided by ad spend, see what a 3× ROAS means, and understand why attributed revenue is different from profit. CPA Calculator Use this cpa calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. CAC Calculator Use this cac calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Conversion Rate Calculator Use this conversion rate calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. CPM Calculator Use this cpm calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Hourly to Annual Salary Calculator Use this hourly to annual salary calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Annual Salary to Hourly Calculator Use this annual salary to hourly calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Ratio Calculator Use this ratio calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded. Weighted Average Calculator Use this weighted average calculator with a clear formula, worked example and instant results. Values stay in your browser and are not uploaded.
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