Professional-grade encryption, hashing, encoding, and audio conversion — all running directly in your browser. No servers. No accounts. No data leaves your device.
Advanced Encryption Standard with GCM, CBC, and CTR modes. Supports 128, 192, and 256-bit keys. NIST-approved.
Asymmetric encryption with OAEP and PKCS#1 padding. Generate key pairs from 1024 to 4096 bits.
Generate cryptographic hashes with SHA-256, SHA-512, MD5, and more. Verify data integrity instantly.
Hash-based Message Authentication Code for verifying message integrity and authenticity with a shared secret.
Adaptive password hashing with configurable work factor. Industry standard for secure password storage.
Encode and decode text or binary data using standard Base64 or URL-safe Base64 format.
Convert text to hexadecimal representation and back. Essential for binary data inspection.
Percent-encode strings for safe use in URLs and query parameters. RFC 3986 compliant.
Inspect and decode JSON Web Tokens — header, payload, and expiry. No signature verification (client-only).
Convert between MP4, AVI, MKV, MOV, WebM, FLV, 3GP, and GIF. Change resolution, quality, and FPS. All in-browser with FFmpeg.wasm.
Convert any video clip into an animated GIF with custom frame rate and resolution. Perfect for sharing short clips without audio.
Cut any video to an exact time range. Use the live preview player to set start and end times, then download the trimmed clip in the original format.
Combine multiple video clips into one MP4. Add files, reorder, choose fast stream-copy or universal re-encode mode, and download — no upload needed.
Rotate video 90°, 180° or flip horizontally/vertically. Combine rotation and flip, then download as MP4 — all inside your browser, no upload required.
Slow down to 0.25× slow motion or speed up to 4× fast forward. Audio stays perfectly in sync. Choose a preset or use the custom slider — no upload needed.
Repeat a video 2–20 times and download as a single seamless MP4. Uses stream copy — fast and lossless. Perfect for making looping clips.
Boost or reduce the audio track of any video from 0% to 200%. Video stream is copied without re-encoding — fast and lossless.
Crop your video to any aspect ratio — 16:9, 4:3, square, portrait, or custom pixel dimensions. Remove black bars and reframe shots.
Convert audio between MP3, WAV, FLAC, AAC, OGG, OPUS, M4A, and AIFF. Extract audio from video files too.
Trim any audio file to an exact time range. Upload MP3, WAV, OGG or FLAC, set start and end, preview and download — no upload required.
Extract audio tracks from MP4, MKV, MOV, AVI, and WebM video files without any quality loss.
Combine multiple audio tracks into one. Upload MP3, WAV, OGG or FLAC, reorder them, set a silence gap between tracks, and download as WAV.
Boost or reduce audio volume from 0% to 200%. Works with MP3, WAV, OGG, FLAC, AAC, M4A. FFmpeg.wasm — 100% client-side.
Flip any audio file backwards. Reverse MP3, WAV, OGG, FLAC for creative effects or sound design. FFmpeg.wasm — 100% client-side.
Shift audio pitch up or down by semitones without changing playback speed. −12 to +12 semitones. FFmpeg.wasm — 100% client-side.
Data Encryption Standard — CBC, ECB, CFB, OFB modes. Legacy compatibility tool. Not recommended for new projects.
Applies DES three times per block — stronger than DES but deprecated by NIST in 2023. For legacy system compatibility only.
Compress JPG, PNG, and WebP images with custom quality and max resolution. See exactly how much space you save before downloading.
Convert between JPG, PNG, WebP, and BMP formats. Batch convert multiple images at once with custom quality settings.
Combine multiple images into a single PDF document. Choose page size, orientation, and margin. Each image becomes one page.
Generate cryptographically secure passwords with custom length, character sets, and strength meter. Bulk generate up to 100 passwords at once.
Generate memorable multi-word passphrases — easier to remember than random passwords and often stronger.
Find the exact number of days, weeks, months, and years between any two dates. Includes business days count.
Calculate your exact age in years, months, and days from your birthday. Includes next birthday countdown and age on any date.
Combine multiple PDF files into one. Drag, drop and reorder your files, then download the merged PDF instantly — no upload required.
Split a PDF into individual pages or extract a custom page range. Download each page separately or as a new combined PDF — all in-browser.
Convert each PDF page into a PNG or JPG image. Choose resolution, preview all pages, then download individually or grab everything as a ZIP.
Convert text to spoken audio using your browser's built-in voices. Adjust speed, pitch and volume. Supports multiple languages — 100% client-side.
Count words, characters, sentences and paragraphs in real time. Includes reading time and speaking time estimates. Instant, no button needed.
Convert between binary, octal, decimal, and hexadecimal instantly. Type in any field and all others update in real time.
Convert between HEX, RGB, HSL, HSV and CMYK instantly. Includes a color picker, preset swatches and one-click copy for each format.
Every operation runs entirely in your browser using the Web Crypto API and WebAssembly. No data is sent to any server. No analytics. No logging. Your secrets stay yours.