How to compress and convert images online

Q: How do I compress a photo without losing much quality?

Choose Compress, keep Balanced (quality 80) and press Compress. You see the size before and after, and you can raise the quality to Best quality (92) if the result is too soft.

Q: How do I make an image smaller than a given size, like 500 KB?

Tick Limit file size to, type the number and choose KB or MB, then press Compress. If the size cannot be reached, the converter tells you that the file size you asked for was not reached.

By THEO GRIG MEDIA PRO SRL • Last updated: 6 November 2026

Open the Image Converter & Compressor, add your pictures, choose Compress or Convert and press the button. Each result shows the size before and after. Everything runs in your browser, so the pictures are not uploaded.

Open the converterFree, no account, files stay on your device

Compress images in 5 steps

Open the converter and choose Compress at the top (the other mode is Convert). Add up to 60 pictures at once.
Pick the format: Same as original, JPG, WebP, AVIF or PNG. WebP and AVIF are offered only when your browser can create them.
Set the Quality with Smaller file (60), Balanced (80) or Best quality (92), or type any value from 10 to 100. PNG has no quality setting.
If you want, make the pictures smaller in pixels with Longest side (3840, 2560, 1920, 1280 or 800 px), or tick Limit file size to and type a limit in KB or MB.
Press Compress. Each picture shows its size before and after and the percentage saved, with a total under the buttons. Download them one by one, or choose Download all (.zip) when there are two or more.

Convert images to another format

Choose Convert at the top, pick Convert to and press Convert. You can open PNG, JPG, WebP, GIF, BMP, AVIF, ICO, SVG, TIFF and PSD files (your browser decides which other formats it can read) and save them as PNG, JPG, WebP, AVIF, GIF, BMP, ICO, TIFF, PSD or PDF.

Some formats have extra options. JPG, WebP, AVIF and PDF have a Quality. JPG, BMP and PDF have no transparency, so the transparent areas take the Background colour you choose (white by default). ICO lets you choose the icon sizes, from 16 to 256 px or all of them. GIF has an option for smoother colors (dithering). With several pictures and PDF, you can put them all in one PDF.

Which format to choose

Format	Quality setting	Transparency
JPG	Yes	No: transparent areas take the Background colour
PNG	No	Yes
WebP	Yes	Yes
AVIF	Yes	Yes

For photographs, JPG and WebP give light files, and WebP is usually lighter at a similar look. To make a PNG much smaller, choose WebP or JPG. If a picture cannot get smaller in the same format and size, the converter keeps your original file instead of a bigger one.

Supported formats

Open: PNG, JPG, WebP, GIF, BMP, AVIF, ICO, SVG, TIFF, PSD and other formats your browser reads
Save: PNG, JPG, WebP, AVIF, GIF, BMP, ICO, TIFF, PSD, PDF
Compress: JPG, WebP, AVIF, PNG

Frequently asked questions

How do I compress a photo without losing much quality?

Choose Compress, keep Balanced (quality 80) and press Compress. You see the size before and after, and you can raise the quality to Best quality (92) if the result is too soft.

How do I make an image smaller than a given size, like 500 KB?

Tick Limit file size to, type the number and choose KB or MB, then press Compress. If the size cannot be reached, the converter tells you that the file size you asked for was not reached.

How many pictures can I process at once?

Up to 60. You can download the results one by one or all together as a .zip.

Does converting a GIF keep the animation?

No. Animated GIFs convert only their first frame.

Are my pictures uploaded?

No. Compressing and converting happen on your device.