All tools

Convert AVIF images to JPEG in your browser. Decode and re-encode on-device. Your files never leave the page.

Convert AVIF images to PNG in your browser. Your files never leave your device. Free and private.

Base64 string → image download. Decode locally.

Compress JPG, PNG or WebP to a target file size in your browser. Your files never leave your device. Free and private.

Turn one image into a favicon pack: ICO, 16×16, 32×32, Apple 180, Android 192 and 512. Runs in your browser. No upload.

Flip any image horizontally or vertically in your browser. Your files never leave your device. Free and private.

Convert HEIC and HEIF photos to JPG in your browser. No upload. No account. Your files never leave your device.

Convert HEIC (iPhone) images to PNG in your browser. No uploads or accounts. Your photo stays on your device.

Adjust brightness, contrast and saturation of any image in your browser. Private, no upload.

Drop an image. Sample pixels on a canvas and cluster frequent colors. Files never leave the device.

Compress JPG, PNG, WebP with a live quality slider. 100% client-side. Files never leave your browser. Free, no watermark.

Crop any image by selecting a region in your browser. Your files never leave your device. Free, private, no upload.

Pixels + print size → DPI/PPI (and the reverse). Math in the browser; optional EXIF from a local file.

Convert between popular image formats in your browser. No upload, free, no watermark.

Convert any photo to black and white in your browser. Your files never leave your device. Free and private.

Resize any image by pixels or percentage in your browser. Your files never leave your device. Free, private, no upload required.

Image file → Base64 string in the browser. Copy or embed. No server.

Convert JPG or PNG to WebP in your browser. Your files never leave your device. Free and private.

Convert JPG images to PNG in your browser. Your files never leave your device. Free and private.

Convert PNG images to JPG with quality control in your browser. Your files never leave your device. Free and private.

Clean metadata from images in your browser. Photos are not uploaded; processing stays on your device.

Rotate any image by 90°, 180°, 270° or a custom angle in your browser. Your files never leave your device. Free and private.

Sanitize SVG code, remove scripts and bloat locally. 100% private, no-upload processing with zero server latency.

SVG → data URI (and a copy-paste CSS/HTML snippet). Runs in the browser.

Convert SVG to JPEG in your browser. Your files never leave your device. Free and private.

Rasterize SVG to PNG in your browser. Your files never leave your device. Free and private.

Convert WebP images to JPEG in your browser. Your files never leave your device. Free and private.

Convert WebP images to PNG in your browser. Your files never leave your device. Free and private.

Add page numbers to the footer of every page in a PDF in your browser. Your files never leave your device. Free and private.

Compress PDF files in your browser. Lower file size while keeping quality. Private, free, no watermark.

Trim margins and crop pages of a PDF in your browser. Your files never leave your device. Free and private.

Remove selected pages from a PDF in your browser. Your files never leave your device. Free and private.

Extract selected pages from a PDF into a new PDF in your browser. Your files never leave your device. Free and private.

Pull all text from a PDF instantly in your browser. No upload, free, no account.

Merge JPG/PNG (and similar) into one PDF in the browser. Add images, reorder, download. No uploads or watermarks.

Create professional invoices and download as PDF. 100% client-side, no account, private.

Merge multiple PDFs into one file in your browser. Your files never leave your device. No upload, no account, 100% private and free.

Add or remove PDF passwords entirely in your browser. You supply the password; we never see it or the file.

Count the number of pages in a PDF instantly in your browser. Your files never leave your device. Free and private.

Permanently black out sensitive PDF text locally. 100% private, no-upload processing with zero server latency.

Convert chosen PDF pages to JPG in your browser. Pick a page range and download only those images. Nothing is stored on a server.

Convert PDF pages to PNG images in your browser. Your files never leave your device. Free and private.

Strip author, title and other metadata from a PDF in your browser. Your files never leave your device. Free and private.

Drag and drop to reorder pages in a PDF in your browser. Your files never leave your device. Free and private.

Rotate pages inside a PDF in your browser. Your files never leave your device. Free and private.

Split a PDF into separate pages or custom ranges in your browser. Your files never leave your device. Free, private, no upload required.

Convert pasted text to a PDF locally. 100% private, no-upload processing with zero server latency.

Add text or image watermarks to every page of a PDF. 100% client-side, private, free.

Reformat bank statement text to CSV locally. 100% private, no-upload processing with zero server latency.

Keep only chosen CSV columns. Output a new CSV. Local only.

Remove duplicate CSV rows by selected columns. Paste or drop; download cleaned CSV. Local only.

Paste CSV, edit cells in a grid, and download CSV or PDF locally. 100% private, no-upload processing with zero server latency.

Pivot a CSV on a key column or unpivot wide columns into rows. Local parse.

Turn CSV into clean HTML table markup in your browser. Your data never leaves your device. Free and private.

Convert CSV to JSON in your browser. Paste or drop a file; choose headers and delimiter. Local only.

Turn CSV into a Markdown table in your browser. Processing stays local.

Turn CSV into INSERT statements. Identifiers are quoted. Runs in the browser.

Convert a CSV table to XML in your browser. Your data never leaves your device. Free and private.

Convert CSV to YAML in your browser. Your data never leaves your device. Free and private.

Swap rows and columns of a CSV in your browser. Your data never leaves your device. Free and private.

Pretty-print and format JSON in your browser. Your data never leaves your device. Free, private, no upload required.

Minify JSON in your browser by removing whitespace. Data is not sent to a server.

Compare two JSON documents for added, removed, and changed paths. No upload.

Convert JSON to CSV in your browser. Paste an array or object; nested keys are flattened. Data is not sent to a server.

Convert JSON data to XML format in your browser. Your data never leaves your device. Free and private.

Convert JSON to YAML (and YAML to JSON) in the browser. Structure and indentation preserved. Config never uploaded.

Validate JSON syntax and find errors instantly in your browser. Your data never leaves your device. Free and private.

Format and indent XML in your browser using the native parser. No server communication.

Convert XML to JSON in your browser. Your data never leaves your device. Free and private.

Convert YAML to JSON in your browser. Your data never leaves your device. Free and private.

Validate .env syntax and duplicate keys locally. 100% private, no-upload processing with zero server latency.

BETA. Trim video to WebM in your browser. No upload. MP4 (H.264) and WebM work best; many screen recordings will not decode.

Compute Adler-32 checksums used by zlib and PNG. Browser-only, no upload.

Calculate exact age in years, months, days. Free, private, instant.

Clean API tokens, Authorization headers and cookies locally. 100% private, no-upload processing with zero server latency.

Generate and verify Argon2id/i/d password hashes with full memory/time/parallelism control. 100% browser-based.

Convert text to hexadecimal in your browser. Encoding is local.

Edit audio (trim, convert, merge, volume) in your browser. No upload required.

Create scannable barcodes (UPC-A, EAN-13, Code 128, Code 39…). Download PNG/SVG. Private, free.

Scan 1D barcodes (UPC, EAN, Code 128…) with your camera or from an image. Private, client-side.

Encode text or data to Base32 (RFC 4648). 100% client-side, free.

Encode or decode Base32 (RFC 4648) in your browser. Text stays in this tab.

Encode or decode Base58 (Bitcoin alphabet) for text or hex. 100% client-side, private.

Encode/decode Base62 for compact alphanumeric strings. Browser-only, no upload.

Encode text to Base64 or decode Base64 to text in your browser. Your data never leaves your device. Free and private.

Paste Base64 and download the original file (image, PDF, etc.). 100% private, client-side.

Encode or decode Base85 (Ascii85) data. 100% client-side and private.

Hash text with bcrypt in your browser. Work runs locally. The plaintext is not sent to a server.

Convert text to binary and binary back to text. Free, private, client-side.

Generate BLAKE3 hashes (text or file) with keyed & derive-key modes. 100% browser-based, no upload, no AI. Free & private.

Layer CSS box-shadows with offset, blur, spread, and color. Copy the declaration.

Test your webcam or camera feed instantly. No recording stored, no upload.

Parse Cookie or Set-Cookie strings. Flag missing Secure/HttpOnly/SameSite and oversize values.

Simulate an OPTIONS preflight from origin, method, and request headers. No network call.

Calculate CRC-32 (IEEE, Castagnoli, BZIP2, etc.) for text or files in your browser. Never uploaded. Free forever.

Generate CRC-64 checksums (ECMA-182 and variants) for text or files. 100% client-side, no upload.

Bundle files into a ZIP archive in your browser. No upload, no size limits beyond device memory.

Turn a cron expression into plain English and upcoming run times. Runs in the browser.

Visualize cron schedules on a calendar grid locally. 100% private, no-upload processing with zero server latency.

Parse a Content-Security-Policy header. Flag unsafe-inline, wildcards, and missing object-src. Local parse.

SHA-256 hash inline scripts for CSP, or mint a cryptographically random nonce. Web Crypto in this tab.

Build polygon() clip-path from a few presets or point list. Copy CSS.

Toggle flex-direction, wrap, justify-content, and align-items on a live preview. Copy CSS.

Build linear or radial CSS gradients. Copy the background-image. Preview in this tab.

Set columns, rows, and gap. Preview grid-template. Copy CSS.

Minify CSS code by removing whitespace in your browser. Your code never leaves your device. Free and private.

Open and extract ZIP archives in your browser. Preview contents, download selectively. No upload.

Pick dest, mode, site, and user to see Sec-Fetch-* request headers a browser would send.

Hash any file with SHA-224/256/512, SHA-3, BLAKE3, CRC32 and more. 100% client-side. Files never leave your browser.

Convert any file (image, PDF, etc.) to Base64 in your browser. Never uploaded. Free.

Convert hexadecimal to ASCII text in your browser. No data is uploaded.

Compute HMAC (SHA-256 etc.) signatures in your browser. Your data never leaves your device. Free and private.

Beautify and indent HTML code in your browser. Your code never leaves your device. Free and private.

Compose iframe sandbox tokens and Cross-Origin-Opener/Embedder-Policy headers. Copy attributes.

Test JSONPath expressions against JSON in your browser. Your data never leaves your device. Free and private.

Generate TypeScript interfaces from JSON objects in your browser. Your data never leaves your device. Free and private.

Build HS256 JWTs in the browser with Web Crypto. Header, payload, HMAC. Keys never leave the tab.

Decode and inspect JWTs in your browser. Header, payload, and signature. Optional local verify if you paste a key. The token is not sent anywhere.

Compute raw Keccak hashes (including Ethereum’s keccak-256). 100% client-side, private.

Inspect a text log in the browser: search, filter, simple stats. Log contents stay on the device.

Filter huge Android Logcat files instantly in your browser. 100% private, no-upload processing with zero server latency.

Compute MD5 checksums of text or files in your browser. MD5 is a legacy digest, not a password hash. Nothing is uploaded.

Test your microphone volume and input instantly. No upload, no account, private.

Encode text to Morse code or decode Morse back to text in your browser. Your data never leaves your device. Free and private.

Convert numbers between binary, octal, decimal and hex in your browser. Your data never leaves your device. Free and private.

Create a code_verifier and S256 code_challenge with Web Crypto. Nothing is sent to an auth server from this page.

Check password length and character classes in your browser. The password is never sent anywhere. Free and private.

Derive keys with PBKDF2-HMAC-SHA256/512. Configurable iterations & length. 100% client-side.

Build a Permissions-Policy / Feature-Policy header for camera, mic, geolocation, and payment.

Paste web app manifest JSON. Check name, icons, display, and start_url. Installability heuristics only.

Generate a QR code image from text or URL in your browser. Your data never leaves your device. Free and private.

Scan QR codes using your camera or by uploading an image. 100% client-side, private.

Parse URL query strings into key/value pairs in your browser. Your data never leaves your device. Free and private.

Test JavaScript regular expressions against text in your browser. Patterns and samples stay local.

Generate RIPEMD-160 hashes used in Bitcoin addresses. Client-side, no upload.

Full scientific calculator with trig, logs, powers, constants. Runs in your browser, no account.

Emit a modern visually-hidden / sr-only CSS snippet and a sample span.

Generate scrypt hashes and derived keys with custom N/r/p parameters. Client-side only.

Generate strong passwords with the Web Crypto API in your browser. Nothing is sent or stored on a server.

Emit CSP, COOP, COEP, Referrer-Policy, HSTS, and X-Content-Type-Options snippets from checkboxes.

Generate SHA-1 hashes of text or files in your browser. Your data never leaves your device. Free and private.

Generate SHA-224 hashes for text or files. 100% browser-based, no upload, free.

Generate SHA-3-224, SHA-3-256, SHA-3-384 or SHA-3-512 hashes. Client-side only, no upload.

Generate a SHA-384 hash of text or a file in your browser. Data never leaves your device. Free, private, no upload.

Generate SHA-512 hashes in your browser. Your data never leaves your device. Free and private.

Calculate SHA-256 checksums of files or text with Web Crypto in your browser. No file uploading.

Format SQL in your browser with tokenized parsing. Queries are not sent to a server.

Generate Subresource Integrity hashes from pasted source or a local file using SHA-256, SHA-384, or SHA-512 in the browser.

Paste SVG. Strip comments, editor junk, and extra whitespace. Download a smaller SVG.

Parse viewBox and width/height. Suggest a tighter viewBox from numeric path bounds when possible.

Convert times across time zones instantly. See multiple cities at once. Private, free.

Simple countdown timer or stopwatch. Custom times, browser notifications. Private, no account.

Pick time zones and working hours. See overlapping UTC windows. No calendar sync.

Create and manage tasks that stay only in your browser. No account, no cloud sync required.

Generate RFC 6238 TOTP codes from a Base32 secret. Clock is your device. Nothing is synced.

Convert between metric and imperial units instantly. Private, accurate, free.

Unix epoch to human date in either direction. Instant, in-page.

Encode or decode URL strings and query parameters in your browser. Your data never leaves your device. Free and private.

Parse a full URL into protocol, host, path, query and hash in your browser. Your data never leaves your device. Free and private.

Parse a user-agent string in your browser — yours or a pasted one. No fingerprinting service is called.

Generate version 4 UUIDs with browser cryptographic randomness. Generation is local.

Generate an ECDSA P-256 VAPID public/private key pair with Web Crypto. Keys stay in this tab.

Tick WCAG 2.2 AA criteria. Download a markdown report. State stays in this tab.

Create a local RTCPeerConnection and list ICE candidate IPs. No STUN server you do not choose. Nothing is posted.

Convert text to upper, lower, title, sentence, camel, snake, or kebab case in your browser.

Count characters with and without spaces instantly in your browser. Your text never leaves your device. Free, private, no upload.

Find and replace text in your browser. Your draft never leaves your device. Free, private, no upload.

Decode HTML entities back to characters in your browser. Your text never leaves your device. Free and private.

Encode or decode HTML entities in your browser. Text never leaves this page.

Convert Markdown to HTML with a live preview in your browser. Text is not sent to a server.

Remove duplicate lines from any text in your browser. Your text never leaves your device. Free and private.

Join lines by removing newline characters in your browser. Your text never leaves your device. Free and private.

Convert a URL slug back into human-readable text in your browser. Your data never leaves your device. Free and private.

Alphabetically sort lines of text in your browser. Your text never leaves your device. Free and private.

Shift SRT and VTT subtitles forward or backward locally. 100% private, no-upload processing with zero server latency.

Compare two text blocks side by side. Insertions and deletions are highlighted locally.

Convert any string into a URL-friendly slug in your browser. Your text never leaves your device. Free and private.

Type or paste text and download a .txt file locally. 100% private, no-upload processing with zero server latency.

Measure your typing speed (WPM) and accuracy in 15–60 seconds. Free, no signup, private.

Count words, characters, sentences and paragraphs instantly in your browser. Your text never leaves your device. Free, private, no upload.

Drop an image and simulate protanopia, deuteranopia, tritanopia, and achromatopsia on a canvas.

Paste a list of hex colors. See WCAG 2.1 contrast ratios for every pair. Local math.

Convert between HEX, RGB, HSL and CMYK in your browser. Your data never leaves your device. Free and private.

Find the closest CSS color name for any HEX or RGB value in your browser. Your data never leaves your device. Free and private.

Check WCAG color contrast ratio between foreground and background in your browser. Your data never leaves your device. Free and private.

Build a CSS gradient in OKLCH for more even lightness. Copy linear-gradient(in oklch, …).

Generate complementary, analogous or triadic color palettes from one color in your browser. Your data never leaves your device. Free and private.

Generate realistic Markdown placeholder content with headings, lists, code, and more. 100% client-side, no upload, free. Perfect for docs & mockups.

Create Markdown tables instantly with a visual editor. Paste data, set alignment, copy GFM syntax. 100% browser-based, zero uploads, no AI.

Build Markdown tables visually in your browser. Add rows, set alignment, paste from Excel. No upload, no account, no AI. Instant GFM output.

Copy Markdown as formatted rich text locally. 100% private, no-upload conversion with zero server latency.

Paste CSV, Excel data, or build visually — get perfect Markdown tables instantly. 100% client-side, no upload, free forever.

Paste BreadcrumbList JSON-LD. Check position order, missing item URLs, and name gaps.

Paste HTML and see the h1–h6 outline, skipped levels, and multiple h1s. Parsed with DOMParser.

Fill WebApplication, FAQ, and HowTo fields. Download JSON-LD. Built in this tab.

Paste JSON-LD. Check @context, @type, and common required properties for WebApplication, FAQPage, HowTo, and Article.

Turn a title, summary, and link list into an llms.txt markdown file. Download in the browser.

Compare robots meta, X-Robots-Tag, and robots.txt snippets for noindex/nofollow conflicts. Local only.

Build preconnect, dns-prefetch, preload, and prefetch link tags from origins and URLs. Copy HTML.

Parse robots.txt locally against RFC 9309. Group user-agents, flag syntax issues, and test a URL. Nothing is fetched or uploaded.

Preview title and description pixel width the way desktop SERPs truncate. Runs locally.

Extract Open Graph and Twitter tags from pasted HTML and flag missing title, description, or image.

Build a valid sitemap.xml with changefreq, priority, and lastmod. Paste URLs, set values, download. 100% client-side, no upload.

Paste sitemap.xml and validate urlset structure, loc URLs, and 50,000 URL / 50 MB guidance. Parsed in the browser.

Convert ASCII text to 8-bit binary instantly in your browser. No upload, no account, no AI. Clean spaced or compact output.

Decode 8-bit binary code into readable ASCII text. 100% client-side, no upload, free. Handles spaced or continuous binary.

Mix ambient noise and binaural focus tones locally. 100% private, no-upload audio with zero server latency.

Free Hz music generator and online tone generator. Play any frequency from 20 Hz to 20 kHz — sine, square, triangle, sawtooth. 440 Hz, 432 Hz, 1 kHz test tones. 100% client-side.

Generate Lorem Ipsum to exact character, word, or paragraph count. 100% client-side, no upload, free. Perfect for meta tags & UI mockups.