Free tools that respect your privacy

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PDF

Merge PDF Files Combine two or more PDFs into a single document. Reorder files before merging — everything happens on your device. Split PDF Extract a page range like 1-3, 5, 9- into a new PDF, or split every page into its own file downloaded as a ZIP. Compress PDF Lossless mode optimizes the file structure and keeps text selectable. Strong mode rasterizes pages for maximum savings on scanned documents. Organize PDF Pages See every page as a thumbnail. Drag to reorder, rotate individual pages, mark pages for deletion — then export the result. Rotate PDF Pages Fix sideways or upside-down documents in one click. Choose the angle and every page is rotated instantly on your device. PDF to JPG / PNG Each page is rendered to a crisp image at the resolution you choose. Multiple pages download as a single ZIP file. JPG to PDF Drop your images, arrange the order, and get one clean PDF. Each image becomes a perfectly sized page. Protect PDF with a Password Encrypt your PDF so it can only be opened with the password you choose. Encryption happens locally — we never see anything. Unlock PDF Tired of typing the password every time? Enter it once and download a permanently decrypted copy — processed on your device only. Watermark PDF Add CONFIDENTIAL, DRAFT or any text as a diagonal watermark across every page. Adjust the opacity to taste. Add Page Numbers to PDF Insert clean “page / total” numbering at the position you choose — bottom center, bottom right or top right. Sign PDF Draw your signature with mouse or finger — or upload an image — and stamp it onto the document. Flattened into the page, ready to send. Redact PDF (Permanent) Draw black boxes over sensitive text or images. Pages are re-rendered so the content underneath is destroyed — impossible to recover. Edit PDF Metadata Inspect the hidden document properties of any PDF and rewrite or clear them — useful for privacy and for tidy document libraries. Extract Text from PDF Every page's selectable text is extracted and saved as a plain .txt file — ideal for quotes, analysis or archiving. Repair PDF Won't open? We re-parse and rebuild the file structure. If that fails, we rescue every readable page as an image so nothing is lost. Remove Metadata from PDF Files PDFs silently store the author's name, the software used and creation timestamps. Drop your PDFs below to wipe the document properties and XMP data — locally, losslessly, privately.

Images

Convert Images Online Pick an output format, drop unlimited images, download one ZIP. 100% on your device. Compress Images Slide the quality down, watch file sizes shrink — before/after size shown for every image. Resize Images in Bulk Set exact pixels or a percentage — every image is resized locally with high-quality scaling. Watermark Images in Bulk Overlay custom text or your logo on every image — nine positions, adjustable opacity and size. ExactSize Pick an image, type your target size in KB, and get a file that matches it exactly. Processed 100% in your browser with a Web Worker — nothing is uploaded. Remove EXIF Data from Photos Drop your photos below and wipe GPS coordinates, camera model, timestamps and every hidden EXIF tag — without touching image quality. Everything runs locally in your browser. Photo Metadata Viewer Curious what your files reveal about you? Drop any photo or PDF to get an instant, detailed report of every embedded metadata field — then remove it all with one click if you wish.

QR & Links

ForeverQR Other generators lock your QR behind a trial and kill it after 14 days. Ours are static codes generated in your browser: they work forever, no account, no paywall, no tracking. WiFi QR Code Generator Print it, frame it, stick it on the fridge — guests scan and connect instantly. The code is static, works forever and is generated locally: your WiFi password never leaves your device. vCard QR Code Generator One scan adds your name, phone, email and company straight into someone's contacts. Perfect for business cards and email signatures — static, free forever, and your details never leave your browser. WaLink Pro Create a wa.me link with a pre-filled message, get a QR code, and generate a floating chat button for your website — all in your browser. WhatsApp QR Code Generator Perfect for flyers, packaging, store windows and menus: one scan opens a WhatsApp chat with your number and an optional pre-filled message. Generated locally — free forever. WhatsApp Chat Widget for Your Website Generate a lightweight floating WhatsApp button — pure HTML/CSS, no external scripts, no watermark. Enter your number, copy the snippet, paste it before </body>. Done.

Video & Subtitles

Convert Subtitle Files SRT, WebVTT, ASS/SSA, SBV and TXT, converted instantly on your device. Nothing is uploaded, ever. Shift Subtitle Time Move every cue earlier or later by an exact number of milliseconds. Processed locally — your file never uploads. Sync Subtitles When a flat shift isn't enough: give us two reference points and we re-time the entire subtitle linearly, on your device. Subtitle FPS Converter Subtitles made for a PAL 25 fps rip drift on a 23.976 fps file. Fix it with one click — locally in your browser. Clean & Fix Subtitles Remove [sighs], <i> tags, JOHN: prefixes, empty lines and overlapping cues in one pass — without your file leaving the device. Merge Subtitles Drop two parts; the second is automatically re-timed to follow the first (or set your own offset). All on your device. Split a Subtitle File Pick the cut time and download both halves — part 2 is re-timed to start at 00:00. Processed locally. Find & Replace in Subtitles Fix a mistranslated name in 800 cues at once — plain text or regex, processed entirely on your device. Subtitle Quality Check A pro-grade QC report — too-fast cues, 3-line walls of text, overlaps — generated instantly in your browser. Subtitle Editor with Video Preview Load your video (it never uploads), edit each cue, click ▶ to jump the player to it, and export in any format. Hardcode Subtitles into Video (Beta) The impossible one: real subtitle burning with zero upload. FFmpeg runs inside your browser — your video never touches a server.

Audio

Slowed + Reverb Maker Upload a song, dial in the slowdown and reverb amount, preview instantly and download your edit — the aesthetic slowed + reverb sound in one click. 8D Audio Converter Give any track the immersive 8D effect — the sound circles around your head. Adjust orbit speed, preview live (use headphones!) and download. Bass Booster Amplify the low end of any track with an adjustable bass boost and built-in clip protection. Preview live and download the boosted version. Audio Trimmer & Cutter Cut the exact segment you need from any audio file. Audio Merger Join several tracks into a single file — right in your browser. Audio Volume Changer Boost quiet recordings or tame loud ones — safely. Add Reverb to Audio Room, hall or cathedral — dial in the perfect reverb. Online Audio Equalizer 10-band EQ with live preview — no software needed. Reverse Audio Flip any track to play backwards — one click. Pitch Shifter Raise or lower pitch in semitones, speed untouched. Tempo Changer Speed up or slow down music, pitch stays true. Audio Normalizer Bring every track to the same peak level. Audio Noise Reducer Tame hiss and background noise in one pass. Vocal Remover Phase-cancel centered vocals from any stereo track. Stereo Panner Move the mix left or right with one slider. Auto Panner Set the sweep rate, render, download as WAV.

Code & Dev

Data & Convert

Base64 Encode / Decode Convert text to Base64 and back — with proper UTF-8 handling so accents, symbols and emoji survive the round trip. URL Encoder / Decoder Percent-encode text for safe use in URLs, or decode an encoded URL back to readable text. Component and full-URI modes included. Hash Generator (SHA-256, SHA-1, MD5) Compute cryptographic hashes of any text instantly — SHA-256, SHA-1, SHA-384, SHA-512 and MD5, all generated locally on your device. Unix Timestamp Converter Convert epoch seconds or milliseconds to readable dates (local and UTC) and convert any date back to a Unix timestamp — with a live epoch clock. YAML ⇄ JSON Converter Paste YAML to get clean JSON — or JSON to get YAML. Instant validation with precise error messages for malformed input. CSV ⇄ JSON Converter Turn CSV data into a JSON array (header row becomes keys) or flatten JSON back into CSV. Handles commas, semicolons and tabs automatically. MD5 Hash Generator Instant MD5 checksum of any text — private and free. SHA256 Hash Generator Secure SHA-2 hashes computed locally in your browser. File Hash Calculator Verify downloads: checksum any file without uploading it. JSON Diff & Compare Structural JSON comparison — see exactly what changed. Color Format Converter HEX ⇄ RGB ⇄ HSL ⇄ OKLCH with live preview. Image to Base64 Get a copy-paste data URI from any image — fully offline. Number Base Converter Bin ⇄ Oct ⇄ Dec ⇄ Hex — live conversion as you type. Binary ⇄ Text Translator Encode text as binary or decode binary back to text. XML Formatter & Validator Pretty-print and syntax-check XML instantly. TOML to JSON Converter Parse TOML config and output clean JSON. CSV Editor Online Edit CSV data in a grid and export instantly. Data Size Converter Bytes ⇄ KB ⇄ MB ⇄ GB — decimal and binary units. Roman Numeral Converter Numbers to Roman numerals and back, instantly. JSON to XML Converter Turn any JSON document into indented XML. Unit Converter Online Length, weight, temperature, area, volume, speed. Sample Data Generator Fake but realistic rows for testing, JSON or CSV. Visual SQL Query Builder Build SQL queries visually — no typing. SQL to NoSQL Converter Translate SELECT/INSERT/UPDATE/DELETE into MongoDB or DynamoDB syntax GraphQL Playground Format, validate and inspect GraphQL queries without a server Excel Formula Generator Get the right Excel formula for lookups, conditional sums, text and dates — with your own ranges. SQL CREATE TABLE Generator Define columns once, get correct CREATE TABLE DDL for four SQL dialects. SQL INSERT Generator Paste CSV data, get correctly quoted INSERT statements for your SQL dialect. JSON to CSV Converter Turn a JSON array into a clean CSV spreadsheet JSON to SQL Converter Generate INSERT + CREATE TABLE statements from JSON JSON to HTML Table Render a JSON array as clean HTML table markup JSON to Markdown Table Convert a JSON array into a GitHub-ready Markdown table JSON to JavaScript Object Turn JSON into an idiomatic JS object literal JSON to JSONL Converter Convert JSON arrays to newline-delimited JSONL and back JSON to .env Converter Convert JSON config into dotenv variables and back JSON Flattener / Unflattener Flatten nested JSON to dot notation — and reverse it JSON Repair Tool Automatically fix broken or invalid JSON JSON Sort Keys Alphabetize JSON object keys, recursively JSON Stringify / Escape Text Escape text as a JSON string literal — and back CSV to SQL Converter Generate INSERT statements from CSV data CSV to XML Converter Turn CSV rows into well-formed XML CSV to YAML Converter Convert CSV rows into a YAML record list CSV to TSV Converter Switch between comma- and tab-separated data CSV to HTML Table Render CSV data as clean HTML table markup CSV to Markdown Table Turn CSV data into a GitHub-ready Markdown table CSV Column Extractor Keep, reorder or drop CSV columns in seconds CSV Diff Spot added, removed and changed rows between two CSVs XPath Tester Run XPath queries against XML instantly INI to JSON Converter Convert INI config files to JSON and back JSON to Excel Converter Turn a JSON array into a downloadable .xlsx spreadsheet JSON Viewer Explore any JSON payload as a readable tree JSON Schema Validator Check any JSON document against its schema with Ajv XML to JSON Converter Turn any XML document into clean JSON XML to CSV Converter Extract repeating XML records into a CSV table YAML Diff Tool Compare two YAML documents key by key TOML Formatter & Validator Validate, format and convert TOML in one place Merge CSV Files Combine multiple CSV files into a single table Split CSV File Break a large CSV into equal chunks with headers NDJSON to JSON Converter Convert JSON Lines to a JSON array — and back

Text

Character & Word Counter Type or paste text and get live counts of characters, words, sentences and paragraphs — with progress bars for Twitter/X, SEO and SMS limits. Text Diff Paste two versions of a text and see every added, removed and changed line highlighted instantly. Perfect for code review, contracts and content edits. Text Case Converter Switch text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case and kebab-case in one click. Lorem Ipsum Generator Generate classic Lorem Ipsum filler text by paragraphs, sentences or words — plain or wrapped in HTML paragraphs, ready to copy. URL Slug Generator Clean, SEO-friendly slugs from any headline — instantly. Markdown Editor with Live Preview Write Markdown on the left, see rendered HTML on the right. String Escape / Unescape Escape strings safely for JSON, HTML, SQL, regex and more. HTML Entity Encoder & Decoder Encode special characters as HTML entities — or decode them back. Word Frequency Counter Rank every word in your text by occurrences. Markdown Table Generator Visual grid in, perfect Markdown table out. Reading Time Calculator How long will your article take to read or speak? Morse Code Translator Text ⇄ Morse with audio playback of the code. Pomodoro Timer Work/break cycles with notifications.

Design & CSS

CSS Gradient Generator Design linear, radial and conic gradients with draggable color stops and a live preview — then copy clean, ready-to-use CSS. Favicon Generator Upload one image and download a complete favicon pack: favicon.ico, PNGs from 16px to 512px, Apple touch icon, webmanifest and the HTML tags to paste. Online Color Picker Visual color selection with instant HEX / RGB / HSL codes. Color Contrast Checker (WCAG) Test any color pair against WCAG AA and AAA thresholds. Color Palette Generator Harmonic palettes from any base color — with CSS variables. Box Shadow Generator Craft the perfect CSS shadow with sliders and live preview. CSS Flexbox Playground Tweak flexbox properties visually and copy the CSS. CSS Grid Generator Design grid layouts visually — get clean CSS instantly. SVG Optimizer Shrink SVG files safely — visual output stays identical. Aspect Ratio Calculator Solve any width/height from a target ratio instantly. PX to EM / REM Converter Pixel values to em, rem and % from any base size. CSS Border Radius Generator Drag the sliders, watch the shape, copy the CSS. CSS Animation Generator Presets + live preview → copy-ready @keyframes. CSS to Tailwind Converter Map plain CSS rules to Tailwind utility classes. Color Blindness Simulator See your design as color-blind users do. CSS Specificity Calculator Which selector wins? Get the (a,b,c) score. SVG Path Editor & Visualizer See, understand and transform SVG paths. Placeholder Image Generator Custom-size dummy images as PNG or SVG.

Security

Strong Password Generator Create cryptographically secure passwords with your rules — length, symbols, digits, upper/lowercase — plus a live strength meter. Generated on your device, never transmitted. UUID / GUID Generator Generate one or hundreds of RFC-4122 UUID v4 identifiers with formatting options. Uses your browser’s native crypto — instant and offline-capable. JWT Decoder Paste a JSON Web Token to inspect its header and payload, check expiry with readable timestamps, and verify structure — entirely on your device. JWT Generator (HS256) Build and sign test JWTs locally — secrets never leave your device. Content Security Policy Generator Build a solid Content-Security-Policy header directive by directive, with output for any server. HSTS Header Generator Generate a correct Strict-Transport-Security header with safe max-age and preload guidance.

DevOps

Chmod Permissions Calculator Toggle read, write and execute for owner, group and others — and get the octal number (755, 644…), symbolic notation and the ready chmod command. Cron Expression Generator Compose cron schedules and understand existing ones in plain words. Dockerfile Generator Solid Dockerfile starters for every major stack. Docker Compose Generator Build docker-compose.yml with a form — no YAML typos. YAML Validator Instant YAML syntax check with exact error locations. Nginx Config Generator Correct nginx server blocks for static sites, proxies and SPAs. Docker Run → Compose Converter One docker run command in, compose YAML out. .env File Generator & Checker Write, validate and download clean .env files. Htpasswd Generator Basic-auth credentials hashed right in your browser. SSH Config Generator Host aliases, keys, ports — a tidy ssh config. Systemd Service Generator Production-ready unit files from a simple form. GitHub Actions Workflow Generator CI YAML for your stack in one click. Kubernetes YAML Generator Deployment + Service + Ingress from one form. Conventional Commit Message Generator feat, fix, chore — well-formed commits every time. Terraform HCL Generator Ready-to-apply Terraform configs from a form. AWS IAM Policy Generator Visual builder for AWS IAM policy JSON. Makefile Generator Ready-made Makefiles with common targets. Log Viewer & Analyzer Filter, search and highlight log files. Dependency Analyzer Audit package.json dependencies, ranges and risk flags in seconds .htaccess Redirect Generator Build Apache redirect rules — HTTPS force, www handling & 301 redirects — right in your browser. Apache Virtual Host Generator Generate a production-ready Apache VirtualHost — SSL, PHP-FPM and logging included. Caddyfile Generator Build a clean Caddyfile for static sites, SPAs, reverse proxies or PHP apps in seconds. CORS Header Generator Generate correct CORS headers for raw HTTP, Nginx, Apache or Express — no more preflight errors. Cache-Control Header Generator Get the right Cache-Control header for every asset type — presets included, no guesswork. Set-Cookie Header Generator Build a secure Set-Cookie header with all attributes — plus matching JS and Express code. .htaccess to Nginx Converter Translate Apache .htaccess rules into Nginx directives automatically — with honest notes on what needs review. .dockerignore Generator Generate a thorough .dockerignore — smaller builds, faster deploys, no leaked secrets. GitLab CI Pipeline Generator Generate a working .gitlab-ci.yml with stages, dependency caching and build artifacts. docker run Command Builder Turn container options into a correct docker run command — ports, volumes, env and limits. kubectl Command Generator Build the right kubectl command for any action, resource and namespace in seconds. FFmpeg Command Generator Get the exact FFmpeg command for converting, trimming, compressing or resizing media. OpenSSL Command Generator Build correct OpenSSL commands for certificates, CSRs, key pairs and conversions. Cron Expression Explainer Paste any cron expression and read exactly when it runs — field by field, in plain English. ads.txt Generator Create a valid ads.txt for AdSense and other ad networks — correct format, right location. security.txt Generator Publish a compliant security.txt so researchers can reach you about vulnerabilities. llms.txt Generator Create an llms.txt that tells AI models what your site is and where the key pages are. AI Robots.txt Generator Decide which AI crawlers may access your site — block training, allow search, or both. Sitemap XML Generator Turn a URL list into a valid sitemap.xml with lastmod, priority and changefreq. .env Diff Compare two dotenv files variable by variable dotenv Linter Catch .env mistakes before they break your deploy .env to Kubernetes Secret Generate Secret or ConfigMap YAML from a dotenv file

Network & Web

CIDR / Subnet Calculator Full subnet breakdown from any CIDR notation. HTTP Status Codes Reference What every status code means — and how to fix it. URL Parser & Analyzer See and edit every component of a URL. UTM Campaign URL Builder Tag marketing links correctly — every parameter explained. IP to Binary Converter See any IPv4 in binary, hex and decimal at once. WebSocket Tester & Debugger Connect, send and inspect WS messages live. Website Ping Test Measure HTTP response time of any site with repeated rounds