Exam / ID · Default 20KB · Files stay local

Compress image to 20KB

Compress image to 20KB — or compress a photo to the same cap — for exam, admit-card, and ID uploads. This page opens at 20KB. Crop the face first if the form also lists pixels. Click Compress now. Download is JPG. Nothing is uploaded.

Drop images here or click to select

JPG, PNG, WebP, HEIC, AVIF. Phone up to 50MB, computer up to 100MB. 20 files.

Upload images

Target size

or type

Browser only · no upload. Default is 20KB.

Features

What this 20KB page does that the homepage does not

Same MozJPEG engine as compress image to 100KB. Different default, different job: tight form caps, not blog images.

Locked to 20KB on open

This page starts at 20KB so exam and ID uploads do not need you to hunt for a chip. Type another number only if the form is not 20KB.

Keeps the face, then the bytes

MozJPEG searches quality first. It scales the longest edge only if 20KB is still too small. Crop the head and shoulders yourself before that happens.

No upload of an ID photo

Encoding stays in this tab. Admit-card photos and signatures never go to ImageTo100.com servers.

JPG out for old portals

PNG or HEIC can go in. The file you save is JPG, because many exam boards still reject WebP and PNG.

What it is

What “compress image to 20KB” means

Compress image to 20KB means shrinking a file to 20,480 bytes or less so a form that says “maximum 20KB” accepts it. Compress photo to 20KB is the same job. ImageTo100.com does that in this browser: default 20KB, no upload, JPG download, up to 20 files.

20KB is a much harder cap than 100KB. A typical phone photo is 2–8 MB. At 20KB you only have room for a small, cropped face or a signature. That is why exam boards use it: the photo is displayed at thumbnail size on an admit card, not as a poster.

This is not “compress for the web,” and it is not the homepage 100KB default. A portal that says 20KB will reject 21KB. A quality slider that lands at 80KB does not help. compress image size to 20kb is a byte target, not a vibe.

PNG or WebP can go in. The download is compress image to 20kb jpg format on purpose. If you need a 100KB file for a different form, use image to 100KB on the homepage instead of forcing 20KB and then wondering why the face looks blocky.

Crop the face first. Compressing the whole scene to 20KB spends the budget on sky and furniture.

Default size: 20KB (20,480 bytes)
Custom range: Still 5KB to 10MB if you type
Upload: None. Encoding stays in this tab.
Output: JPG, for exam and ID portals
Batch: Up to 20 files, then Download all
Pixels: You crop first if the form lists them

Nearby sizes

20KB, 10KB to 20KB, or a looser cap

People also search compress image to 10kb to 20kb, compress image to below 20kb, and compress jpg to 20kb. Stay here when 20KB is the printed ceiling. Do not clone this URL for every nearby number.

20KB default

Leave the box at 20. That is compress image to 20kb and compress photo to 20kb on this URL.

10KB to 20KB

If the range is 10KB to 20KB, type 20 unless the form says the file must also be above 10KB.

Below 20KB

Type 10 or 15. Expect more softness. Signatures survive this better than faces.

Need 100KB instead?

Open imageto100.com for job and visa boxes that print 100KB, not 20KB.

Need about 50KB?

Type 50 on this tool if you are already here. A dedicated 50KB page is not live yet.

JPG, not PDF

No image-to-PDF. Attach the 20KB JPG to the form or PDF tool you already use.

How to

How to compress image to 20KB online

Crop if the prospectus lists pixels, drop the file, leave 20KB, click Compress now. Check the size on your device before you open the exam portal.

Exam registration form on a desk with a 20KB photo size limit circled

Step 1

Read the 20KB line on the form

If the portal also lists pixels (for example 200 × 230), crop or resize to that box first. Compressing a full-scene phone photo to 20KB will smear the face.

Passport-style head-and-shoulders print being cropped before a 20KB compress

Step 2

Drop the cropped ID photo

Add a JPG, PNG, WebP, or iPhone HEIC. Leave the target at 20KB. Batch up to 20 files if a portal wants several crops.

Admit-card papers and a 19KB JPG note after compressing an exam photo

Step 3

Download and check 20KB on the device

Click Compress now. Confirm the JPG is at or under 20KB in Files or Finder before you open the exam site. Use Download all for a batch.

Why this page

Why use a 20KB-first page

Fewer “file too large” loops

Exam boards and scholarship forms often reject 21KB the same way they reject 2MB. A 20KB-first page removes the guess.

Safer on a shared computer

ID crops stay in page memory. Close the tab and they are gone. Do not email the original to a random host.

Works after the page has loaded

A hostel or exam-center Wi-Fi can be weak. After this page loads, the encoder does not need to upload the photo.

Honest when 20KB is too tight

If a 12-megapixel landscape cannot hit 20KB, you see a best-effort note. Crop tighter or raise the cap if the form allows it.

Limits and tips

Pro tips before you compress image to 20KB

Crop to head and shoulders on a plain background before you compress image to 20kb. Quality goes where the pixels are.
Signatures are mostly white. They often sit under 20KB with little damage. Face photos do not.
If the form lists both pixels and 20KB, do pixels first. Compressing first, then cropping, throws the size work away.
Start from the camera original, not a screenshot of a screenshot. Each extra JPEG pass makes 20KB look worse.
Check the downloaded bytes on the phone. Some galleries show “KB” rounded; the portal reads the real file size.

If the file is still above 20KB, the tool stopped before the face turned into a smear. Crop to the head and shoulders, then compress again. “Shrink further” will hit a tighter cap, but the face will look blurry. Raising the target only helps if the portal allows more than 20KB.

Use cases

When to compress image to 20KB — and when not to

Exam and admit-card photos

Input: Phone portrait, 2–8 MB

Setting: 20KB default on this page

Output: JPG at or under 20KB

Caveat: Also match background color and face-height rules on the prospectus.

ID, licence, and scholarship forms

Input: Studio or home ID crop

Setting: 20KB, after you set the printed pixel box

Output: File the upload box accepts

Caveat: Some older systems also reject spaces in the file name.

Signature scans

Input: Black pen on white paper

Setting: 20KB is usually generous

Output: Dark strokes, small file

Caveat: Scan, do not photograph under a yellow lamp if the portal wants pure black.

Avatar and tight profile caps

Input: Square headshot

Setting: 20KB if the app still asks for it

Output: Tiny JPG that loads on a weak signal

Caveat: A landscape holiday photo will look soft at 20KB. Crop to the face.

FAQ

20KB compressor questions

These answers are for the 20KB default. The 100KB FAQcovers the homepage job.

How do I compress image to 20kb online?

Open this page, drop the cropped photo, leave the size at 20KB, and click Compress now. ImageTo100.com encodes in this browser and gives you a JPG at or under 20KB. No desktop app.

Is it free to compress image to 20kb?

Yes. There is no account, no daily cap, and no watermark. compress image to 20kb online free jpg is this page: a static tool, JPG download, not a trial.

Can I compress photo to 20kb, or only a graphic?

Yes. Compress photo to 20kb and compress image to 20kb are the same encoder. Use a head-and-shoulders crop for a face. A full-scene photo will look softer at this cap.

Can I compress jpg to 20kb or compress jpeg image to 20kb?

Yes. JPG in stays JPG out. PNG, WebP, or HEIC can go in; the download is still JPG so exam portals that reject PNG still accept the file. compress jpg to 20kb online is this page.

Can I compress image to 10kb to 20kb?

This page defaults to 20KB. If the form says 10KB to 20KB, type 20 to use the top of that range, or type 10 if the ceiling is 10KB. The tool hits one number, not a sliding band.

Can I compress image to below 20kb?

Yes. Type 15 or 10 if a portal is stricter. Quality drops as the cap shrinks. compress image to below 20kb is the same encoder with a lower number.

Will a face still be readable after I compress image to 20kb?

A properly cropped ID photo usually stays recognizable at 20KB. A 4000-pixel landscape will not. Crop first. 20KB is not lossless and is not as sharp as the 100KB homepage default.

Does this upload my exam or ID photo?

No. The photo is decoded in this tab and encoded with MozJPEG in a local Worker. Analytics may record the format and whether compress succeeded; it never receives the file.

Why do exam boards ask for 20KB?

High-volume registration systems cap storage. 20KB is enough for a small on-screen face and cheap to keep. Phone cameras now shoot several megabytes, so the form and the camera no longer match.

Should I set width and height before I compress image to 20kb?

Yes, if the prospectus lists pixels. Do the crop and resize first, then compress image to 20kb. This page hits the byte cap. It does not print a government-legal pixel box for you.

Can I compress image to 20kb and 160 pixels?

This page only hits 20KB. If the form also says 160 × 160 (or any other pixel box), resize or crop to that box first, then leave the target at 20KB. Doing 20KB first and then shrinking pixels will throw the size work away.

Can I compress image to 20kb without losing quality?

No compressor can keep a 4MB phone photo lossless at 20KB. The encoder keeps the highest JPEG quality that still fits. A tight ID crop stays usable. A full-scene shot will look soft. That is the 20KB cap, not a hidden slider.

Can I compress image to 20kb to 50kb?

If the form says 20KB to 50KB, type 50 unless it also says the file must stay at 20KB. This URL defaults to 20KB. The tool hits one number, not a range. Stay here for a 20KB ceiling; type 50 if 50KB is allowed.

Can I compress image to 15kb, 25kb, or 30kb here?

Yes. Type 15, 25, or 30. This page is for the 20KB exam/ID job; nearby caps use the same encoder. 10KB is tighter and softer. Do not use this URL if you meant 200KB or 2MB — those are homepage numbers.

How do I get image size 20 kb? Is this a 20 kb converter?

Drop the photo, leave 20KB, click Compress now. The download is a JPG at or under 20,480 bytes. It converts formats to JPG as a side effect. It is not a unit converter and not a PDF converter.

Can I compress pdf to 20kb, or an image to a 20KB PDF?

No. This tool does not open a PDF and does not write a PDF. compress image to 20kb i love pdf usually means a 20KB JPG to drop into a form. Compress the picture here, then attach that JPG in the PDF tool you already use.

What if the file is already under 20KB?

A JPG already under 20KB is kept. A PNG, WebP, or HEIC under 20KB is still saved as JPG so exam portals that reject PNG accept the file. If a portal also has a minimum size, that is a different rule — check the form.

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