Image preparation

Image Compressor Free image compression with a result you can review.

Compress JPEG, PNG, WebP or SVG inputs for free in your browser. Compare actual bytes and visual detail before keeping a JPEG, WebP or PNG raster export.

Free browser compression. Compare the exported file before replacing your original.

A hand holds a phone showing a comic beside its printed page.
AI-generated concept: one short comic shown on a phone and a printed page; no measured compression result is depicted.

Your workspace

Use the image compressor

Free browser compression. Compare the exported file before replacing your original.

or drop images here

Recorded browser example

One input. An output you can inspect.

For this source only, the file changed from 1,612 to 1,224 bytes while retaining 600 × 400 dimensions. Other images can save more, less or no space.

Synthetic test input

Generated three-colour test chart before processing
600 × 400 px · 1,612 bytes · Download this file

Recorded output

compress-image result from the browser processing component
600 × 400 px · 1,224 bytes · Download this file

Settings: Automatic output from a PNG source: WebP, quality 0.72, no dimension reduction.

Recorded in Chromium 133 using the current browser processing component and a generated colour-chart source. This isolated component check is not a cross-browser benchmark or a customer project.

01 / A more useful starting point

Optimise for what the image contains

Photographs and detailed paintings can tolerate different settings from comic lettering or a flat-colour logo. Inspect small text, hair and thin outlines while adjusting quality, rather than judging only the file-size number.

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02 / A more useful starting point

Choose the format deliberately

Automatic output keeps JPEG or WebP sources in that format and converts PNG or SVG sources to WebP. Choose a format explicitly when transparency or lossless raster output matters. The JPEG export uses a pale opaque background; WebP or PNG is the useful comparison for alpha edges.

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Three practical starting points

Try a brief. Check the result. Tweak one thing.

Try these exercises for Image Compressor, with concrete details to inspect. These are suggested exercises, not recorded customer projects.

01

A comic page for the web

Suggested brief

Compress a copy of a page with speech bubbles. Compare the original and the export at 100% zoom.
What to inspect
Look at the smallest lettering and the thin outlines around faces.
What to change next
Raise quality or choose PNG if text edges become noisy.
Try this workflow
02

A product photo for an upload limit

Suggested brief

Start with an opaque product photo and compare JPEG with WebP at the same quality setting.
What to inspect
Record the actual exported bytes; the same setting need not produce the same size for every image.
What to change next
Change format or quality gradually instead of assuming a fixed percentage saving.
Try this workflow
03

A transparent sticker preview

Suggested brief

Use a source with transparent edges and export to a format that supports alpha.
What to inspect
Place the output against a dark background and check for a rectangle or pale halo.
What to change next
Keep WebP or PNG rather than flattening transparency into JPEG.
Try this workflow

From input to a useful output

How to use Image Compressor

Start with a small task first, then keep the steps that help your project.

  1. 01

    Add images

    Select supported JPEG, PNG, WebP or SVG source files.

    Check: An SVG input is rasterised for this image-compression workflow.

  2. 02

    Set format and quality

    Choose an output format and adjust quality where the format supports it.

    Check: PNG does not use the JPEG/WebP lossy-quality slider in the same way.

  3. 03

    Compare results

    Run compression and inspect the exported size and preview.

    Check: Record source bytes, output bytes, dimensions, format and quality. A small or already optimised source may become larger.

  4. 04

    Download your files

    Save a single result or download the selected results as a ZIP.

    Check: Reopen a file from the download before deleting the originals.

Choose the approach for your task

Task, approach and review point
Your goalStart withBefore you finish
Photographic imageJPEG or WebPCheck gradients and facial details.
Transparent artworkWebP or PNGVerify the alpha edge.
Text and line artCompare PNG and high-quality WebPRead the smallest text at 100%.

Know the boundaries

What to check before you rely on the output

  • No fixed compression percentage is promised; results depend on dimensions, detail, source encoding and output format.
  • SVG inputs are rendered to a raster output. This does not optimise or preserve editable SVG paths.
  • This workflow is for still images. GIF animation is not an accepted source type in the current tool.

Image Compressor: your questions, answered

Is compression free?

The local browser compression tool does not use AI generation credits.

Can I choose the output format?

The current tool offers automatic selection, JPEG, WebP and PNG. Verify the downloaded file type before publishing.

Will every file become smaller?

No. An already optimised image can stay similar in size or become larger when re-encoded.

Does JPEG preserve transparency?

No. Use PNG or a suitable WebP export for transparent artwork and inspect the result.

Does SVG stay editable?

No. SVG sources are drawn to a canvas in this tool and exported as a raster image.

Are source files uploaded for compression?

The compression and encoding operation runs in your browser. The local compressor does not require a generation API upload.

Sources and further reading

Check the guidance behind the workflow

Each source is linked with its scope. An external reference is not an endorsement or performance certification.

Image Compressor

Start with one clear idea.

Free browser compression. Compare the exported file before replacing your original.

Try Image Compressor