The best free tool for compressing images in bulk. Why we say best

The best free image compressor.
Lighter images, faster pages.

Compress a batch of images in seconds and give your landing pages, ads and product grids a faster first paint. Nothing is uploaded. No sign-up, no watermark.

Aqualona product photo136 KB → 29 KB (-79%)
Dignified Life portrait272 KB → 59 KB (-78%)
Sector7 UI screenshot2.3 MB → 43 KB (-98%)
Compress images free See how it works
  • Nothing uploaded
  • No sign-up
  • No watermark
  • Runs on your device

Same images. A fraction of the weight.

Images from Pacing client sites, compressed in the browser. These are the exact files in the demo above, so you can check every number.

Aqualona bathroom product grid -79%
Aqualona E-commerce

Product grid, 79% lighter

Shop photography that stays sharp and loads light on mobile data.

136 KB JPEG → 29 KB WebP
Dignified Life editorial portrait -78%
Dignified Life Editorial

Editorial portrait, 78% lighter

Brand photography with the shadows and skin tones intact. Drag the split and judge for yourself.

272 KB JPEG → 59 KB WebP
Sector7 software interface screenshot -98%
Sector7 Software

UI screenshot, 98% lighter

A heavy PNG screenshot turned into a crisp AVIF, text still readable.

2.3 MB PNG → 43 KB AVIF

Pacing Compressor: nothing uploaded, no sign-up, no watermark, free, up to 20 images, WebP, AVIF, PNG and JPEG output, before and after on every image.

02Why it matters

Heavy images cost you clicks.Light ones help win them back.

Images are often the heaviest thing on a page. Trim them and your pages load sooner, your Core Web Vitals get a fairer shot, and fewer paid clicks leave before the page appears.

What you get
0 Buploaded to us
20images per batch
10 MBper image
Freeno account
What heavy images do
  • 01
    Slow landing pages

    Your ad budget pays for the click. A slow hero image decides whether they stay.

  • 02
    Weaker Core Web Vitals

    A big hero image is a common cause of slow Largest Contentful Paint, which Google uses as a page experience signal.

  • 03
    Risky upload tools

    Many free compressors send your files to their servers. Not ideal for unreleased campaigns or client work.

What Pacing Compressor does
  • 01
    Smaller files, same look

    WebP by default, with AVIF, PNG and JPEG when you need them.

  • 02
    Private by design

    Compression runs on your device. Your images never leave the browser tab, and camera and location data are removed from every file you download.

  • 03
    Check before you ship

    Drag the split on every image to compare it with the original before you download.

03Use cases

Every page that sellsdeserves lighter images.

Pacing rule of thumb

Give every image a weight budget before it goes live. These are the budgets we aim for on client sites.

WhereWhy it mattersFormatAim for
Ad landing pages The hero is the first thing a paid visitor waits for. Keep it light. WebP < 200 KB
Product and shop pages Grids of product shots add up fast, especially on mobile data. WebP < 100 KB
Blog and SEO content Articles with lots of images stay quick to load and quick to crawl. WebP / AVIF < 150 KB
Logos and icons Brand marks keep clean edges and transparency. No fuzzy logos. PNG / WebP < 30 KB
04 How it works

Drop. Done. Download. No settings needed.

  1. 01

    Drop

    Up to 20 images, 10 MB each. They stay on your device.

  2. 02

    Compress

    WebP out of the box. Pick Low, Medium or High if you want more say.

  3. 03

    Compare

    Drag the split to check each image against the original, with both sizes shown.

  4. 04

    Download

    One zip with every file. Upload it to your site, CMS or ad platform.

05For developers

Simple on the surface.Proper controls underneath.

WebP, AVIF, PNG and JPEG

Four output formats, with a short guide on when to use each.

Formats
Expert mode

Quality and speed, resize by width or percentage, PNG 8-bit, alpha and background, greyscale, sharpen, filename suffix.

Control
Batch and zip

Up to 20 images, 10 MB each, converted in one go and downloaded as a single zip.

Batch
Runs in the browser

An open-source image engine compiled to WebAssembly, running in a pool of web workers. No server-side processing. EXIF, XMP and GPS are stripped; the colour profile is kept.

Wasm
Embeddable

Want the compressor inside your own site or client portal? Try the embed build and grab the iframe snippet.

Embed
Default output
WebP

Small files that all current major browsers support. Switch to AVIF when you want to squeeze harder.

Bulk conversion and CLI available on request

06 Why Pacing

Built by a marketing team that lives in page speed.

Why we say best

In September 2026 we compared the free online compressors people use most: TinyPNG, Squoosh, Compressor.io, iLoveIMG, ShortPixel, Optimizilla and Kraken. Pacing Compressor is the only one that does all of this at once:

  • Compresses a batch of up to 20 images, 10 MB each
  • Never uploads them: the work happens in your browser
  • Outputs WebP, AVIF, PNG or JPEG
  • Shows a before and after on every image, with the saving
  • Removes camera and location data from what you download
  • No account, no watermark, no daily credits

Squoosh is private too but converts one image at a time. The others upload your files to their servers. Smallest file is not the only test: at the same visual quality, encoders win on some formats and lose on others, so compare before you download.

07 Get started

Faster assets start here. Compress your assets now.

Free, private and done in seconds. Want the whole site, your ads and your tracking pulling in the same direction? That is what Pacing does.

Compress images free Let's talk

Built by Pacing Agency, your marketing team for performance marketing, websites and tracking.