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Application photos & image scans · 40,000-byte maximum

Compress Image to 40 KB

Compress an application photo or single ID-card image to a maximum of 40,000 bytes locally. Compare facial features and small text; reduced file size does not guarantee readable details or portal acceptance.

A smaller file starts here.No sign-up
Maximum size

Drop your image here
browse files

JPG, PNG or WebP → at most 40.0 KB

Max 15 MBMax 24 MPPaste from clipboard
01 · Choose your settings
KB

40,000 bytes maximum · 1 KB = 1,000 bytes

Auto keeps JPEG inputs as JPEG and uses WebP for other inputs when supported. JPEG fallback uses a white background.

Zero server uploads: Processed in local browser memory
Decimal bounds: 20 KB = 20,000 bytes verified
  • Free to use. No account needed.
  • Your images stay on your device.
  • Check the preview and exact file size.
JPG · PNG · WebPUp to 15 MB · 24 MP
A little help getting the right result

Check Your Upload Requirements

Requirements differ by form and year. This tool checks a maximum file size; it does not guarantee acceptance or set exact dimensions.

What to checkBefore you compressBefore you upload
Application photoUse 40 KB only if the current upload instructions allow itCheck face framing, pixels and background
ID-card imageChoose a clear image scan, not a PDFZoom in to check names, numbers and small text
Quality and resolutionKeep the original; compression may reduce dimensionsVerify byte range and required output format
40 KB (40,000-byte) image compression workflow showing quality vs resolution balance for ID cards and portal photo uploads.
The browser balances encoder quality and resolution within its limits. The 2.4 MB input and 39,200-byte output shown here are examples, not measured performance; inspect facial detail and small ID text yourself.

How to Prepare Your Image in 3 Steps

1

Select or Drop Image

Choose a supported static JPG, PNG or WebP file up to 15 MB and 24 megapixels. Animated images and PDF files are not supported.

2

In-Browser Compression

Your browser tries quality and dimension settings within its processing limits. Time depends on the file and your device; a matching result is not guaranteed.

3

Download Verified File

Download after checking the result against your destination’s file type, size and dimension requirements.

A GOOD FIT, NOT JUST A SMALL FILE

Make every kilobyte count.

How compression works

Choose the right output format

Use JPG when your form asks for a photograph in JPEG format. JPEG replaces transparent areas with white. Use WebP when the destination accepts it and you need a smaller file or transparency.

PNG is supported as an input. Downloads are JPEG or WebP; this tool does not export PNG or PDF.

Small enough, and still readable

Compression can soften details and reduce pixel dimensions. Check faces, letters and signature strokes in the comparison before downloading. File size in KB and image dimensions in pixels are different requirements.

For a strict 20 KB maximum, this site checks against 20,000 bytes. See why that differs from 20 KiB.

Supported inputs are static JPG, PNG or WebP files up to 15 MB and 24 megapixels. Before compression, the working image is limited to 12 megapixels; larger sources are reduced proportionally even if a generous byte limit is selected. The search may reduce dimensions further. Some images cannot reach the selected maximum within the time, attempt and minimum-dimension limits. The tool does not pad a smaller result to an exact size or enforce a minimum file size.

Still getting an upload error?
  • Check the destination’s required file type. A small WebP file will not work in a JPG-only field.
  • Check both minimum and maximum file size. A result under 20 KB may also be below a required 10 KB minimum; this tool enforces a maximum only.
  • Check the required pixel dimensions, crop, background and photograph date. This compressor does not set an exact width, height or DPI.
  • If the result is blurry, crop away unnecessary background in an image editor first, then try again. Choose a larger target only if the destination allows it.

Frequently Asked Questions

How do I convert a photo to 40 KB?

Select a static JPG, PNG or WebP and keep the 40 KB maximum. The browser adjusts quality and, if necessary, reduces dimensions to seek an output at most 40,000 bytes. Inspect the preview and actual byte count before downloading.

Can I compress an ID card to 40 KB and keep the text readable?

You can try an image of the card, but readability is not guaranteed at 40 KB. Check small names, dates and numbers at full size. If the result is unclear, improve the source scan or use a larger target only if the destination allows it. PDF input is not supported.

Does photo compression to 40 KB keep the original resolution?

Not necessarily. Inputs are limited to 15 MB and 24 megapixels; the working image is limited to 12 megapixels before the search. The tool may shrink it further to meet the ceiling. It does not offer exact pixel-dimension or DPI controls.

Why is the output smaller than 40 KB or in a different format?

40 KB is a 40,000-byte maximum, not an exact size. Automatic output chooses JPEG or WebP; PNG input is not saved as PNG. Select JPEG if your portal requires it and check any minimum size separately. Image processing stays in your browser; website usage analytics are described in the privacy policy.