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Resize image to 20KB online

Most exam and government forms cap photo uploads at 20KB, which is far below what any phone camera produces. Drop your image here and it is compressed to land just under 20KB, in your browser, without the file ever being uploaded.

  • No upload — files stay on your device
  • Works offline once loaded
  • Free forever, no signup, no watermark
Drop a photo here, or tap to choose JPG, PNG, WebP or HEIC from your phone — nothing is uploaded
Target file size
Custom target (KB)
Width (px, optional)
Height (px, optional)

{{ note }}

Finding the best quality that fits {{ targetLabel }}…
Result preview Resized photo preview
  • Original {{ sourceSizeLabel }}
  • Now {{ resultSizeLabel }}
  • Saved {{ savedPercent }}%
  • Pixels {{ resultWidth }}×{{ resultHeight }}

Within your {{ targetLabel }} target.

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From a free tool to your own software

Software for exam, recruitment and application portals

Every exam and job form sets its own photo and signature limits, and a rejected upload often surfaces only after the fee is paid or the deadline has passed. Coaching institutes, recruitment teams and form-filling centres handling hundreds of applicants need those checks inside the upload step itself, so each file is resized, validated and stored correctly the first time.

  • Candidate application portals

    Registration forms that resize photos and signatures to your own KB and pixel rules on upload, and tell the applicant exactly what to fix before they submit.

  • Workspaces for form-filling centres

    Your staff prepare photos, signatures and certificates for many applicants in one place, with a preset for each exam notice and a record of what was submitted.

  • Student apps for coaching institutes

    An app that follows upcoming exam notifications for each student, collects their documents once and reminds them of form deadlines and requirements.

  • Recruitment and KYC onboarding flows

    Onboarding for employers, banks and NBFCs that captures ID photos and signatures from a phone camera, crops and compresses them, and flags blurry images.

Who we build this for: Coaching institutes, recruitment agencies, exam application centres, HR teams and banks collecting applicant documents online.

This tool runs entirely in your browser. The team that built it designs custom software for businesses and runs DigiSign, our own signage platform, in production.

Plan an application portal Web & Mobile Applications

How to use this tool

  1. Add your photo

    Drop the image onto the box, or tap it to pick a file — on a phone you can shoot a fresh photo straight from the camera.

  2. Choose the target size

    Pick one of the KB presets or type your own number, and add a pixel width and height if the form demands specific dimensions.

  3. Check and download

    The preview shows the compressed result and its exact size. If it looks right, download the JPEG and upload it to your form.

Questions people ask

How do I resize an image to 20KB?

Drop your image in, leave the 20KB preset selected, and the tool searches JPEG quality settings until the file lands at or just under 20KB. Then download the result.

Why does my photo have to be under 20KB?

Recruitment and government portals set small upload limits so their servers can store millions of applications cheaply. The limit is about their storage, not about photo quality, so compressing to fit is expected and accepted.

Will resizing to 20KB ruin my photo?

Quality does drop as the file gets smaller, but the tool searches for the highest JPEG quality that still fits the 20KB limit instead of guessing. The preview shows exactly what you are about to download, so you can judge it before saving.

Can I set pixel dimensions as well as the 20KB target?

Yes. Enter a width and height and the photo is resized to those dimensions first, then compressed to your KB target. Leave them blank to keep the original proportions.

Is my photo uploaded to a server?

No. The resizing happens inside your own browser using the Canvas API, and this site has no upload endpoint at all. You can switch off your internet connection after the page loads and the tool still works.

Does it work on a phone?

Yes. Tapping the drop zone opens your camera or gallery, and the download works the same way it does on a desktop. Most forms are filled on a phone, so the tool is built for that first.

Related tools

Who makes these tools

Free because it costs us nothing to run: your browser does the work, not our servers. Made by Dynamb Technologies — we build software for businesses.