How do I compress an image to 20 KB?

Drop the image onto the compressor above. 20 KB is already set as the target (you can switch to another size or a percentage), so click Compress and download the result.

Which image formats can I compress to 20 KB?

JPG, PNG, WebP, AVIF, GIF, HEIC and TIFF. Each file keeps its own format. SVG is compressed losslessly, so it can't be aimed at a size.

Which format keeps the most quality at 20 KB?

WebP, HEIC and AVIF keep more detail than JPG at the same size, roughly 490 × 330 px for WebP against 430 × 290 px for JPG. But forms usually ask for JPG, so check what the site accepts. PNG is the worst choice for photos at small sizes.

Will my image be resized to fit 20 KB?

20 KB is tight. Expect a photo to be scaled down to a few hundred pixels across. That's normal for signature and ID-photo fields, which display small anyway. At 20 KB, a detailed photo comes out around 430 × 290 px as a JPG, or 490 × 330 px as a WebP. Each file keeps its own format.

What if my image won't fit in 20 KB?

Signatures: high contrast, tight crop: sign on plain white paper with a dark pen, photograph or scan it in good light, and crop right up to the ink. A clean signature fits 20 KB with room to spare. Crop before you compress: every pixel you crop away is budget the subject keeps. For an ID photo, crop to head and shoulders first; for a document, crop to the page. Match the form's pixel size too: many photo fields also specify dimensions. Resize to those first: a smaller image fits 20 KB at noticeably higher quality.

Will the file be exactly 20 KB?

It aims to land at or just under 20 KB. 20 KB here means 20,000 bytes, so it also fits sites that count 1 KB as 1,024 bytes.

What is 20 KB typically needed for?

Common reasons: scanned signatures on exam, job and government application forms; passport-style photos on forms that ask for a very small file; avatars, icons and small thumbnails. Limits vary by site, so check the exact number where you're uploading.

Are my images uploaded?

Everything except HEIC is compressed in your browser, so nothing is uploaded; HEIC runs in an isolated cloud sandbox and is deleted automatically.

JPG→smaller JPG→PNG PNG→smaller JPG→WebP WebP→smaller JPG→JPEG HEIC→smaller JPG→PDF GIF→smaller JPG→GIF SVG→smaller JPG→AVIF AVIF→smaller JPG→SVG TIFF→smaller JPG→ICO MP4→smaller JPG→TIFF MP3→smaller JPG→BMP PDF→smaller JPG→PSD DOCX→smaller JPG→EPS MOV→smaller JPG→JXL JPG→TGA M4A→smaller JPG→DDS JPG→EXR WebM→smaller JPG→HDR JPG→JP2 MKV→smaller JPG→CUR JPG→PPM XLSX→smaller JPG→QOI JPG→PCX EPUB→smaller JPG→PGM JPG→PBM AVI→smaller PNG→JPG PNG→WebP FLAC→smaller PNG→JPEG PNG→PDF PPTX→smaller PNG→GIF PNG→AVIF AAC→smaller PNG→SVG PNG→ICO ZIP→smaller PNG→TIFF PNG→BMP OGG→smaller PNG→PSD PNG→EPS Opus→smaller PNG→JXL PNG→TGA 7Z→smaller PNG→DDS PNG→EXR ODT→smaller PNG→HDR PNG→JP2 TAR.GZ→smaller PNG→CUR PNG→PPM ODS→smaller PNG→QOI PNG→PCX ODP→smaller PNG→PGM PNG→PBM TAR.BZ2→smaller WebP→PNG WebP→JPG TAR.XZ→smaller WebP→JPEG WebP→PDF WebP→GIF WebP→AVIF WebP→SVG WebP→ICO WebP→TIFF WebP→BMP WebP→PSD WebP→EPS WebP→JXL WebP→TGA WebP→DDS WebP→EXR WebP→HDR WebP→JP2 WebP→CUR WebP→PPM WebP→QOI WebP→PCX WebP→PGM WebP→PBM AVIF→PNG AVIF→JPG AVIF→WebP AVIF→JPEG AVIF→PDF AVIF→GIF AVIF→ICO AVIF→TIFF AVIF→BMP AVIF→PSD AVIF→EPS AVIF→JXL AVIF→TGA AVIF→DDS AVIF→EXR AVIF→HDR AVIF→JP2 AVIF→CUR AVIF→PPM AVIF→QOI AVIF→PCX AVIF→PGM AVIF→PBM AVIF→PNM GIF→PNG GIF→JPG GIF→WebP GIF→MP4 GIF→JPEG GIF→PDF GIF→MOV GIF→AVIF GIF→SVG GIF→WebM GIF→MKV GIF→ICO GIF→AVI GIF→TIFF GIF→BMP GIF→WMV GIF→PSD GIF→FLV GIF→M4V GIF→MPEG GIF→3GP GIF→EPS GIF→MPG GIF→TS HEIC→PNG HEIC→JPG HEIC→WebP HEIC→JPEG HEIC→PDF HEIC→GIF HEIC→AVIF HEIC→ICO

Compress image to 20 KB

Shrink any photo or image to 20 KB or less for the signature and photo fields on online application forms. JPG, PNG, WebP and HEIC and more. Free, and most never leave your browser.

Mostly in your browser
Same format, smaller file
Batch & ZIP download

JPG
PNG
WebP
AVIF
GIF
HEIC
TIFF

How to compress an image to 20 KB

1
Add your images
Drop JPG, PNG, WebP or HEIC files onto the compressor above, paste them, or click to browse. Mixed formats are fine.
2
20 KB is preset
Every file is compressed to land at or just under 20 KB. You can switch to another size, or a percentage to reduce by.
3
Compress
Click Compress. Each image keeps its format and, for most formats, never leaves your browser.
4
Check and download
Check the new sizes, then download each file or all of them as a ZIP.

Which format keeps the most at 20 KB

The same 20 KB holds a different amount of detail depending on the format. Rough size of a detailed 3:2 photo at good quality:

Format	A photo fits roughly	Good to know
JPG	≈ 430 × 290 px	Accepted almost everywhere; the safe pick for forms
WebP	≈ 490 × 330 px	More detail than JPG, if the site accepts WebP
HEIC	≈ 530 × 350 px	iPhone photos; many forms don't accept it
AVIF	≈ 550 × 370 px	Most efficient, least widely accepted
PNG	≈ 220 × 150 px	Best for logos, screenshots and signatures, not photos

Rough guide for detailed photos. Each file keeps its own format; convert first if the destination needs a specific one.

What 20 KB is typically for

Scanned signatures on exam, job and government application forms
Passport-style photos on forms that ask for a very small file
Avatars, icons and small thumbnails

Limits vary by site and change over time; check the exact number where you're uploading.

Photo won't fit in 20 KB?

Signatures: high contrast, tight crop
Sign on plain white paper with a dark pen, photograph or scan it in good light, and crop right up to the ink. A clean signature fits 20 KB with room to spare.
Crop before you compress
Every pixel you crop away is budget the subject keeps. For an ID photo, crop to head and shoulders first; for a document, crop to the page.
Match the form's pixel size too
Many photo fields also specify dimensions. Resize to those first: a smaller image fits 20 KB at noticeably higher quality.
Photo saved as PNG? Make it a JPG
At 20 KB, a photo stored as PNG only fits around 220 × 150 px; as a JPG it fits around 430 × 290 px.
Convert PNG to JPG →

Other image sizes

20 KB for a specific format

Tips and numbers for one format at 20 KB.

Or compress images by level and set any size or percentage yourself.