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Compress Image to 20KB

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3-step workflow · seconds

Compress images in three steps

From phone-camera photos to small files that upload first time: no sign-up, no upload, no watermark.

  1. STEP 01

    Add your images

    Drop up to 500 JPG, PNG or WebP files, each up to 100 MB.

    Read on this page only
  2. STEP 02

    Pick quality or KB

    Tap a preset, move the slider, or set a target size such as 50 KB.

    Change it any time
  3. STEP 03

    Download

    Save each image, or all of them in one ZIP.

    JPEG, PNG or WebP
Guide

How to use this image compressor

Each image is decoded, drawn on a canvas and saved again in the format you pick. It happens in background workers on this page, so nothing leaves your device.

Updated for 2026: 500-image batches, parallel workers and Cancel
  1. 1

    Quality for everyday use

    Pick a preset (75%, 60%, 90%, 40%) or set 10 to 100 on the slider.

  2. 2

    Target size for forms

    Pick 20, 50, 100, 200 KB, or type any limit from 5 to 5000 KB. Works with JPEG and WebP.

  3. 3

    Change settings after

    Once images are compressed, a new setting re-compresses them by itself after a short pause.

  4. 4

    Check before you send

    Open the before and after slider on any image, or rotate and crop it first.

Guide

Compressing without ruining the picture

Four habits that keep small files looking good.

Quality

Start at 75

Around 75 is a good balance for photos. Go lower only if the file is still too big.

  • 75 for the web
  • 60 for sharing
  • 90 for print
Pixels

Resize first

A huge photo shown small wastes bytes. Fewer pixels means less to store, so quality can stay higher.

  • Turn on Resize
  • Set one side
  • Keep the shape
Format

Match the format

JPEG for photos, PNG for sharp graphics, WebP for the smallest files.

  • JPEG for photos
  • PNG for text and logos
  • WebP for the web
Source

Work from the original

Saving a lossy file again can lose a little more detail. Compress from the best copy you have.

  • Keep the original
  • Compress once
  • Don't re-compress copies
Modes

Quality mode or target size: what each does

Two ways to get a smaller file. They decide what the studio holds fixed.

By quality

One save at the quality you set. The file size is whatever that quality gives.

Target size

The studio tries qualities step by step and keeps the highest one that fits under your KB limit.

Still too big?

If even quality 10 is over the limit, it shrinks the pixels and tries again, unless you set a size yourself.

Already small

A file already under the target in the same format comes back untouched.

Got bigger?

If a same-format save would be larger than your file, you get the original back.

PNG

PNG is lossless, so quality does nothing to it. Target size needs JPEG or WebP.

Guide

How different people use the compressor

One studio, very different size limits.

Form and exam applicants

Strict KB caps

Portals often reject a photo or signature over a set size. Read the limit on the form, then aim just under it.

Typical setting: target size · JPEG · a little under the cap

Website owners

Faster pages

Big images slow a page down. Resize to the width the page shows, then compress.

Typical setting: resize · WebP or JPEG · quality 75

Online sellers

Many product photos

Compress a whole catalogue in one batch and download a single ZIP.

Typical setting: batch up to 500 · ZIP

Anyone sending photos

Smaller attachments

Camera photos run to several MB. Shrink them before you email or share them.

Typical setting: Email / share preset · 60
Limits

What the studio can and can't do

The numbers come straight from the tool, so you know before you start.

Batch

How much you can compress at once.

  • 500 images per batch
  • 100 MB per image
  • Up to 4 images at the same time
  • Cancel any time

Output

What you get back.

  • JPEG, PNG or WebP
  • Target sizes from 5 to 5000 KB
  • Names end in _compressed
  • One file or a ZIP

Browser limits

Things your browser decides.

  • Safari can't save WebP from a canvas
  • Input must be JPG, PNG or WebP
  • No KB target for PNG

Need an exact width and height, or a crop to a set shape? Use the Image Resizer first, then compress here.

Guide

Keeping your images small over time

A few habits that save you from compressing the same photo twice.

  1. 1

    Keep the originals

    Compress copies, never the only file. Lost detail can't be brought back.

  2. 2

    Note each site's limit

    Write down the KB cap each portal asks for, so next time you just type it in.

  3. 3

    One ZIP per job

    Batch the images for one upload together. Names that clash get (2), (3) added, so none go missing.

  4. 4

    Pick WebP for your site

    If your site and visitors' browsers support it, WebP gives smaller files for the same look.

Formats

JPEG vs PNG vs WebP for compression

The format decides how small a file can get and whether transparency survives.

FeatureJPEGPNGWebP
Quality setting✓ 10 to 100None (lossless)✓ 10 to 100
Target size in KB✓ Yes✗ No✓ Yes
Transparency✗ Filled white✓ Kept✓ Kept
Size vs JPEG (Google)BaselineLarger for photos✓ 25-34% smaller
Saved in Safari✓ Yes✓ Yes✗ No
Pro tips

Pro tips for smaller images

Small checks that get the file accepted first time.

Aim a little under

The studio counts 1 KB as 1,024 bytes. Some sites may count 1,000, so pick a target a bit below the cap.

Resize for tiny caps

For 20 KB, set a small width yourself. You choose the size instead of the studio shrinking it.

Compare before sending

Use the before and after slider to check faces and text are still clear.

Logo or screenshot?

Keep PNG for sharp edges and text, or try WebP for a smaller file.

On an iPhone?

Pick JPEG or PNG. Safari can't save WebP from a canvas.

Sharing a photo?

Compressing leaves EXIF behind, including GPS, whenever the image is re-encoded.

ZIP for many

In Chrome and Edge on a computer, the ZIP is written straight to the file you choose.

Need WebP for a folder?

Try Image to WebP for a format-only change.

Pro tip: pixels first, then KB

Most upload rules set two limits: a size in pixels and a file size in KB. Set the pixel size first, then compress to the KB cap. Fewer pixels means the studio can keep a higher quality under the same limit.

Which one

A quality setting, or a target size?

Quality fixes how the image looks. Target size fixes how big the file is.

Forms · portals · email caps
KBfixed size

Target size

Every file comes out under your limit, at the best quality that fits. Quality can vary from image to image.

When a site sets the KB limit

Websites · galleries · sharing
Qfixed look

Quality

Every image gets the same quality, so a set looks even. File sizes vary with the picture.

When looks matter more than KB

Verdict: use a target size when a form or site names a KB limit, and quality when you just want smaller files that all look alike.
Use cases

Who uses this image compressor

The same studio, six everyday jobs.

Students

Photos and signatures under an exam form's KB cap.

Job seekers

A profile photo small enough for a job portal.

Sellers

A whole folder of product photos in one ZIP.

Social media managers

Campaign images that upload fast.

Families

Holiday photos small enough to email.

Bloggers

Post images that keep pages quick.

Shrinking a PDF instead? Try Compress PDF.

FAQ

Frequently asked questions

Quick answers about quality, KB targets, formats and privacy.

What dimensions should a 20KB photo be?
Most government forms require 3.5cm x 4.5cm (passport size) at 100-200 DPI. Resize to approximately 200x250 pixels for optimal 20KB results.
Will a 20KB photo look blurry?
At passport photo dimensions (200x250px), 20KB in JPEG format looks acceptable for form submission. It won't be HD quality but meets requirements.
Reviews

What people say

Reviews from people who used this tool.

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Presets

More versions of Compress Images

Other versions of this tool, each set up for a specific need.