Compress, convert & edit media — right in your browser.
Free, fast and private video, audio and image tools. Every tool runs entirely on your device — nothing is ever uploaded, stored or tracked. No queues, no file-size limits, no watermark.
All tools, by category
35 tools and counting — free forever.
Video tools
Audio tools
Image tools
Docs tools
Text tools
Utility tools
Why MediaToolbox?
The privacy-first media toolbox.
Nothing leaves your device
All processing happens locally with in-browser engines. Your files are never uploaded, stored or seen by anyone.
No limits, no watermark
Because your files never hit a server, there are no file-size caps, no queues and no waiting rooms.
Fast by design
No upload, no download, no server round-trip. Press a button and your result is ready in seconds.
Free forever
Every tool is completely free — no accounts, no trials, no watermarks. Ever.
Guides & learn
Plain-English media explainers.
How to compress a video without losing quality (2026)
Why videos are huge, what CRF actually means, and the exact settings to shrink a file by 80% while keeping it watchable.
Read guide →MP4 vs WebM: which video format should you use?
MP4 is everywhere, WebM is smaller and free of patents. Here's when each wins, and how to convert between them.
Read guide →JPEG vs PNG vs WebP: image formats explained
Photos, logos, screenshots, web images — each job has a best format. A plain-English guide to picking the right one.
Read guide →How to compress a video for WhatsApp without losing quality
WhatsApp caps videos at 16MB (and re-compresses anyway). Here's how to shrink files the smart way — with exact settings.
Read guide →How to make a GIF from a video clip (2026 guide)
Turn any MP4 or WebM into a looping GIF — perfect for memes, Discord and social. Exact settings for small, smooth GIFs.
Read guide →How to extract audio from video as MP3 (no install needed)
Pull the audio out of any MP4/WebM/MOV as a clean MP3 — for music, podcasts, samples and offline listening.
Read guide →How to trim a video online in 10 seconds
Cut the boring parts out of any video — losslessly, without re-encoding, right in your browser.
Read guide →How to speed up or slow down a video (audio stays in pitch)
Change video playback speed 0.25× to 4× with pitch-corrected audio — for time-lapses, slow-mo and tutorials.
Read guide →How to rotate a video the right way (fix sideways phone footage)
Sideways videos are the #1 amateur mistake. Here's how to rotate MP4/WebM clips — and why metadata fixes often fail.
Read guide →WebM to MP4: why you need it and how to convert
WebM doesn't play everywhere. Convert to MP4 (H.264) for universal compatibility — phones, editors, WhatsApp, Instagram.
Read guide →How to normalize audio loudness (podcast & video standard)
Uneven loudness ruins podcasts and videos. Normalize to -16 LUFS — the standard for consistent, professional-sounding audio.
Read guide →How to make a ringtone from any song (Android & iPhone)
Cut any song into a perfect 20-second ringtone with fades — free, in-browser, for both Android and iPhone.
Read guide →How to record your voice online — no apps, no installs
Record voice memos, interviews and ideas directly in your browser with the free in-browser Voice Recorder.
Read guide →How to blur an image (hide faces, text & backgrounds)
Blur out faces, license plates and sensitive text — adjustable strength, free, and everything stays on your device.
Read guide →Photo filters explained: grayscale, sepia, vivid & more
What each photo filter does, when to use it, and how to apply them in one click — free and private.
Read guide →How to upscale images without pixelation (2× & 4×)
Enlarge small images 2× or 4× with smoothing — for prints, thumbnails and profile pictures.
Read guide →WebP: the image format that makes websites faster
WebP is 25-35% smaller than JPEG at the same quality. Here's why it matters and how to convert your images.
Read guide →Word count matters: how writers use counters
Words, characters, sentences, reading time — instant text statistics for writers, students and SEO.
Read guide →Case converter: UPPER, lower, Title, camelCase & more
Eight text case styles in one click — for headlines, code variables, files and shout-outs.
Read guide →How to use text to speech online (free, no installs)
Turn any text into spoken audio with your browser's built-in voices — for studying, accessibility and proofreading.
Read guide →Base64 explained: what it is and when to use it
What Base64 encoding actually does, why emails and APIs use it, and how to encode/decode in one click.
Read guide →URL encoding explained: spaces become %20
Why URLs need percent-encoding, when links break without it, and how to encode/decode instantly.
Read guide →MP3 vs M4A vs WAV: which audio format should you use?
MP3, M4A (AAC), WAV and FLAC compared — size vs quality, and when each format wins.
Read guide →Image compression vs resizing: what's the difference?
Compressing and resizing are not the same thing. Here's when to use each — and the exact order that saves the most space.
Read guide →Video formats 101: MP4, MOV, AVI, WebM explained
The video formats you'll actually meet — what they are, what they're for, and how to convert between them.
Read guide →How to prepare videos for Instagram, TikTok & Reels
Format, crop, speed and compress videos for Instagram Reels, TikTok and YouTube Shorts — the exact recipe.
Read guide →Podcast audio: the complete preparation checklist
Normalize, cut, join and export your podcast audio properly — the free in-browser pipeline.
Read guide →How to make YouTube thumbnails (free, no design skills)
Extract the perfect frame from your video and prep it for YouTube — the 1280×720 thumbnail recipe.
Read guide →Why are my files so big? A practical guide to file sizes
The real reasons video, audio and image files balloon — and the exact tools to shrink each one.
Read guide →How to record your screen and compress the result
Record your screen, trim it, and compress it for sharing — the complete in-browser workflow.
Read guide →