Image converter  /  runs in your browser  /  free

Convert an image to WEBPJPGPNGGIFBMP

Five formats, any direction. Drop in up to twenty files at once, pick the output, and take them back as a ZIP. Nothing is uploaded anywhere.

Formats
5 in & out
Batch
20 files
Max file
20 MB
Batch output
ZIP ARCHIVE
Uploads
None
Converter runs locally
  • JPG, PNG, WebP, GIF and BMP — in and out, any combination
  • Up to 20 files at once, 20 MB each
  • Batch downloads arrive as a single ZIP
  • Quality slider for the lossy formats
  • Optional resize while converting, with the ratio locked
  • Works the same on PC, Mac, iPhone and Android
  • JPG → WebP
  • PNG → JPG
  • HEIC exports
  • Screenshots
  • Product catalogues
  • Logo packs
  • Old scans
  • Slide exports
  • Email assets
  • Site migrations
  • Client handoffs
  • Whole folders at once
01The five formats

What each one is actually for

Picking the output format is the whole decision. Everything else the tool does is mechanical.

Comparison five formats, in and out
FormatCompressionTransparencyAnimationReach for it when
WEBPLossy or losslessYesYesAnything going on a website
JPGLossyNoNoPhotographs, maximum compatibility
PNGLosslessYesNoLogos, icons, screenshots, sharp type
GIFLossless, 256 coloursYesYesShort loops, legacy requirements
BMPNoneNoNoLegacy Windows software that demands it
02Common routes

What you gain, what you lose

Every conversion is a trade. These are the ones people actually run, and what happens to the file on the way through.

Routes source → output
ConversionWhat changesWorth knowing
JPG→WEBP25–35% lighter, same lookThe single best thing you can do for page speed
PNG→WEBPMuch lighter, transparency keptThe right move for logos and UI on a site
PNG→JPGFar lighter, transparency lostTransparent areas turn solid — check the background first
JPG→PNGHeavier, nothing recoveredPNG cannot restore detail JPG already discarded
WEBP→JPGHeavier, broader supportFor old software or a client who insists
GIF→PNGBetter colour, animation lostOnly the first frame survives
BMP→JPGDramatically lighterBMP is uncompressed — expect a very large drop
03Batch

Twenty files, one archive

Drop in a whole folder's worth, pick one output format, and every file comes back converted in a single ZIP. Nothing is queued, nothing waits on a server, and the twentieth file finishes about as fast as the first.

If you are migrating a site to WebP or preparing a product catalogue, this is the part that saves the afternoon.

Open the converter
ZIP
04Worth knowing

Converting is not the same as improving

01 / WebP

Why almost everything should end up as WebP

WebP holds the same perceived quality as a JPG at roughly a quarter to a third less weight, and unlike JPG it handles transparency and animation. Every browser in current use supports it.

On a website that shows up immediately in Largest Contentful Paint, one of the Core Web Vitals Google measures. Converting an image library to WebP is one of the few optimisations that costs nothing and changes a number.

02 / One way

Quality lost stays lost

A lossy format throws detail away permanently. Converting a JPG to PNG produces a larger file containing exactly the same damage — PNG has nothing to restore. The same is true going from JPG to WebP: you keep what is there, you do not get back what was already discarded.

If you have the original, convert from that. Converting a converted file compounds the loss each time.

03 / Transparency

The trap when you convert to JPG

JPG has no alpha channel. A logo with a transparent background converted to JPG comes out on a solid fill, and you will usually only notice once it is sitting on a coloured page. If transparency matters, your outputs are PNG or WebP — never JPG.

04 / GIF and BMP

Two formats you convert away from

GIF is limited to 256 colours, so photographs turn blotchy, and its animations are heavier than a small video would be. BMP is uncompressed — a file can run many times the size of the same image as a JPG for no visible gain.

Both are supported here because software still produces them. Converting a GIF keeps the first frame only; the animation does not survive.

05Rest of the toolkit
Resize imagesExact pixels→ Crop imagesChange the shape→ Censor imagesBlur and pixelate→ Photo anonymizerStrip metadata→ EXIF editorRead and rewrite→ Photo collageLayout editor→
06FAQ
How do I convert an image online for free?
Drop your files into the tool above or click to browse for them. Pick the output format — JPG, PNG, WebP, GIF or BMP — and click Convert. Download the results individually, or all together as a ZIP. No account, no cost, no limit.
Are my images uploaded to a server?
No. Conversion runs entirely in your browser through the HTML5 Canvas API. Your files never leave your device, so confidential documents and private photos can be converted without them travelling anywhere.
Can I convert several images at once?
Yes. Up to 20 files in one go, 20 MB each. When the batch finishes you can save each file on its own or take the whole set as a single ZIP archive.
What is the difference between JPG and PNG?
JPG compresses with a small permanent loss of detail, which suits photographs and keeps files light. PNG is lossless and supports transparency, which suits logos, screenshots, icons and anything with sharp text or hard edges.
Why convert images to WebP?
WebP files are typically 25–35% smaller than the equivalent JPG at the same visual quality, and it supports transparency and animation as well. Every current browser handles it, and lighter images improve page load times and Core Web Vitals.
Can I resize while converting?
Yes. Enter the width and height you want before starting, and the ratio lock keeps the image from stretching. Useful when you are preparing files for a CMS, a marketplace or a social platform with fixed dimensions.

Free / unlimited / stays on your device

Change the format, keep the file

Open the converter
Click to accept the cookies for this service