Every tool on this site, grouped by what it works on. All of them run inside your browser, take no account, add no watermark and impose no file size limit.
Each tool does one job with sensible defaults already chosen, so in most cases you can add a file and press Start without touching the options.
Make a video file smaller without a visible drop in quality.
Extract the soundtrack from a video as a plain MP3 file.
Turn a few seconds of video into a shareable animated GIF.
Keep only the section of a video you actually need.
Change a video's resolution or reshape it for a specific platform.
Remove the sound from a video without re-encoding the picture.
Fix a video that was recorded sideways or upside down.
Convert iPhone and QuickTime MOV files into universally playable MP4.
Convert web-native WebM files into MP4 that editors and phones accept.
Modernise legacy AVI files into smaller, widely supported MP4.
Convert MKV to MP4 — usually instantly, and without quality loss.
Convert video to WebM for smaller, faster-loading web pages.
Make an image file smaller without a visible drop in quality.
Hit an exact upload limit instead of guessing at a quality slider.
Shrink a folder of photos in one go and download them as a ZIP.
Scale an image down to an exact pixel width.
Put a folder of mixed sizes onto one consistent width.
Cut a photo down to the shape a profile or a post asks for.
Cut one picture into evenly sized tiles.
Join a run of screenshots into one long image.
Rescue a photo that came out dark, flat or over-saturated.
Put the edge definition back into a slightly soft photo.
Soften a whole picture, lightly or completely.
Give a picture a clean margin, or an icon some breathing room.
Turn a sideways photo upright, or mirror it.
Turn a solid or green-screen background into a transparent PNG.
Rounded corners or a circular crop, with genuinely transparent edges.
Drop the colour out of a photo — properly weighted, not averaged.
Reduce a picture to flat blocks, from a light mosaic to unrecognisable.
Put your own mark on a photo — and nobody else's.
Paint out a mark using the picture that surrounds it.
One .ico file holding every size a browser and Windows ask for.
Turn a heavy PNG into a far smaller JPG.
Convert a JPG into a lossless PNG.
The single biggest size win available to a PNG on a web page.
About a third off every photo on a page, with no visible difference.
Turn a WebP saved from the web into a universally accepted JPG.
Convert WebP to PNG and keep the transparent background.
A GIF as a clean PNG — better colour, real transparency.
A GIF as a small JPEG that any system will accept.
Convert images to WebP for far smaller files and faster pages.
The one format everything opens, from whatever you happen to have.
The format every upload form asks for, from whatever you have.
Render a vector to pixels at exactly the size you need.
Strip the location and camera details out before you publish.
Turn PDF pages into JPG or PNG images, one image per page.
Put JPG and PNG images into one PDF, one image per page.
Shrink a music track or a voice recording to a fraction of its size.
Turn any audio file into an MP3 that plays on everything.
Keep just the part of a recording you actually need.
Fix a recording that is too quiet, too loud, or uneven.
Shrink an uncompressed WAV to a tenth of its size or less.
Make an iPhone voice memo or an AAC track play anywhere.
Get an uncompressed PCM file for editing or for software that demands one.
Join several PDFs into one document, in the order you set.
Take the pages you need out of a PDF and save them as a new file.
Drop the pages you do not want and keep the rest of the document.
Turn sideways pages upright and keep the rotation in the file.
Put JPG and PNG images into one PDF, one image per page.
Turn PDF pages into JPG or PNG images, one image per page.
Turn a wall of JSON into something readable — or back into one line.
Turn text into Base64, with the alphabet your target expects.
Read what a Base64 string actually says.
Escape text so it survives being put in a URL.
Turn %E4%B8%AD%E6%96%87 back into something you can read.
See what is inside a token — without handing it to anyone.
Hash a string with SHA-256 and three of its relatives.
Random identifiers, generated on your own machine.
Turn 1717243800 into a date, and back again.
Rename a column of identifiers into the convention you actually need.
Drag the two control points; the dot underneath shows the easing.
Several Bézier segments, closed into one shape, out as SVG.
Write the sum the way you would on paper, and get every line answered.
Pick which percentage question you are asking, then answer forty of them at once.
One number, all four bases, with no rounding at any width.
Break a number down into the primes it is built from.
The greatest common divisor and least common multiple of a whole list.
One fraction, shown four ways.
Paste a column of numbers, get the whole summary.
Numbers in a range you choose, drawn fairly.
Write the unit next to the number and get every other unit back.
MCMXCIV one way, 1994 the other, a whole list at a time.
One number in four forms: decimal, scientific, engineering and E.
Both roots, the discriminant and the vertex, from the equation as written.
All four counts for n and r: ordered or not, repeats or not.
The monthly payment and what the loan costs in total, side by side.
What it grows to, what the interest is, and the effective annual rate.
1234.56 spelled out — in English words or Chinese numerals.
1920:1080 reduces to 16:9; 3:4 = 9:? solves to 12.
One measurement in, all four out.
Several Bézier segments, closed into one shape, out as SVG.
Drag the two control points; the dot underneath shows the easing.
