ImageLean
No upload required Browser-based Local processing 5 formats

Compress Image to 20KB

Use repeated compression passes to get as close as possible to 20KB. Smart mode defaults to WebP or JPG unless you choose another format.

Compression Settings

Lower quality = smaller file size

File sizes use KiB (1,024 bytes) and MiB. Target sizes are best effort and may not be reached.

Processing and limitations

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ImageTiny app icon

ImageTiny

Compress + batch

Need faster photo compression on iPhone?

ImageTiny handles on-device compression, crop, resize, format conversion, and EXIF cleanup, with batch processing for up to 200 photos.

On-device Batch 200 Privacy-first
Download on App Store

Best for common iPhone photo workflows like HEIC, JPG, PNG, and WebP.

Related Tools

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Compress Image Compress images online for JPG, PNG, WebP, GIF, and HEIC. Compress Image to 200KB Reach a target file size with multi-pass compression and smart format selection. Compress Image to 100KB Reach a target file size with multi-pass compression and smart format selection. Compress Image to 50KB Reach a target file size with multi-pass compression and smart format selection. Compress JPG to 200KB Reduce JPG size to a target limit while keeping a JPG-first workflow. Compress JPG to 100KB Reduce JPG size to a target limit while keeping a JPG-first workflow. Compress JPG to 50KB Reduce JPG size to a target limit while keeping a JPG-first workflow. Compress JPG to 20KB Reduce JPG size to a target limit while keeping a JPG-first workflow.

Compress Image to 20KB Online

Use this page when you need to compress image to 20KB online for forms, portals, CMS uploads, and document workflows.

The tool combines repeated quality and resize passes so you can get close to the requested file size while keeping the workflow private inside the browser.

Handle upload size limits

Use this page when a website, profile flow, or submission system rejects larger images.

Use smart output when needed

WebP or JPG usually reach strict size targets faster than keeping the original format.

Batch target-size compression

Upload multiple files, compare the results, and download the best output for each file.

Processing and limitations

Compression may reduce image quality or dimensions. Compare the result before downloading. Animated GIFs retain animation only with GIF output.

File sizes use KiB (1,024 bytes) and MiB. Target sizes are best effort and may not be reached.

W3C PNG Google WebP

Compress Image Online Without Uploading

100% Client-Side

All processing happens directly in your browser. Your images never leave your device.

Batch Image Compression

Reduce image file size for multiple images at once, then download each file or a ZIP.

Adjust Compression Level

Control the compression level to balance visual quality and file weight.

JPG, PNG, WebP, GIF

Compress images across the most common web image formats.

How to Reduce Image File Size Online

1

Upload

Upload or paste the image you want to compress online.

2

Configure

Adjust quality, width, or height if you want to reduce image size more aggressively.

3

Compress

Click "Compress" to compress image size in your browser.

4

Download

Download the optimized image with a smaller file size.

Frequently Asked Questions

This tool compresses image online inside your browser, so your files stay on your device while you reduce image size and reduce image file size.

Yes. You can adjust quality and dimensions to compress image size while keeping a strong visual result for web, email, and documents.

You can compress image online for JPG, PNG, WebP, GIF, and HEIC files.

Yes. Batch mode lets you reduce image size online for multiple files and download them one by one or as a ZIP.

A quality setting around 75-85 usually gives a good balance between visual clarity and smaller file size for web publishing.

Start by lowering quality first. If the file is still too large after reaching quality 60, then try reducing dimensions as well.

Yes. HEIC input is supported. The tool can convert and compress HEIC files to JPG, WebP, or other formats directly in your browser.

Below 100% quality, color quantization changes pixels. At 100%, PNG encoding is lossless; resizing still changes pixels and metadata may be removed. Output is an 8-bit still PNG: APNG animation and 16-bit depth are not preserved. If the optional encoder fails, browser export may be larger. Compare the preview, dimensions and actual file size.

File sizes use KiB (1,024 bytes) and MiB. Target sizes are best effort and may not be reached. Compression may reduce image quality or dimensions. Compare the result before downloading. Animated GIFs retain animation only with GIF output.

PNG compression: quality and transparency

PNG is a lossless file format, but reducing its colour palette before encoding changes pixels. This tool uses colour quantisation below 100% quality. At 100% it uses lossless PNG encoding; resizing still changes pixels. Metadata may be removed. This browser workflow outputs 8-bit still PNG images; APNG animation and 16-bit channel depth are not preserved. If the optional encoder fails to load, browser PNG export may produce a larger file. Compare the preview, dimensions and measured file size before downloading. For a product image with a size limit, compare actual output bytes and inspect colour gradients before publishing. Resize to the pixel dimensions you need; a quality percentage is not an exact file-size target. Keep the original for subsequent edits.

PNG format specification

Last updated: October 11, 2026

References & Resources

Authoritative specifications and references for the file formats this tool works with.

MDN Web Docs - Web Performance

Mozilla guide to performance, including image delivery budgets.

web.dev - Optimize Your Images

Google best practices for image optimization and lazy loading.