Compress Image to 1 MB

1 MB is the ceiling on a lot of higher-resolution uploads — the CAT registration photo must be under 1 MB, many college and university admission forms cap the photo or document scan at 1 MB, and it's the usual limit for scanned certificates and multi-page document images. At this size you rarely lose visible quality, so the job is simply to bring a large phone photo or high-DPI scan just under the 1 MB line. The tool does that in one pass, keeping the image crisp and never uploading it.

🔒 Everything runs in your browser — nothing is uploaded
Drag & drop an image
or click to browse — you can also paste (Ctrl/Cmd + V)
Compress to under 1 MB
JPG PNG WEBP

🔒 Your image never leaves your device — everything runs in your browser.

1 MB is the ceiling on a lot of higher-resolution uploads — the CAT registration photo must be under 1 MB, many college and university admission forms cap the photo or document scan at 1 MB, and it's the usual limit for scanned certificates and multi-page document images. At this size you rarely lose visible quality, so the job is simply to bring a large phone photo or high-DPI scan just under the 1 MB line. The tool does that in one pass, keeping the image crisp and never uploading it.

Good to know

  • Sized for CAT's under-1 MB photo and the many admission and document forms that cap uploads at 1 MB.
  • Generous budget means photos and scans keep essentially full quality after compression.
  • Aims just under 1 MB in a single step, so a large source file clears the cap immediately.
  • Handles JPG, PNG and WebP and outputs a JPEG accepted by admission and document portals.
  • Processes on-device — your admission photo or certificate scan is never uploaded.

Related image tools

Need more control? Use the full Compress Image tool to pick your own target, or Resize Image to change the pixel dimensions first.

How it works

Three steps. No sign-up, no upload, no wait.

1

Add your image

Drop in a JPG, PNG or WebP, click to browse, or paste it — nothing is uploaded.

2

Compress to 1 MB

The tool finds the best quality that still fits under 1 MB.

3

Download

Save the compressed image, ready to upload to the form.

🔒

Private by design.Everything happens right here in your browser. Your files are never uploaded — we never see them.

Frequently Asked Questions

What's the CAT photo size rule? ▼
CAT registration generally requires the photo as a JPEG under 1 MB with specific dimensions; the signature has its own smaller limit. Targeting just under 1 MB keeps the photo sharp while satisfying the cap — confirm exact rules in the current CAT bulletin.
Do college admission forms really need 1 MB? ▼
Many do. University and college portals frequently cap the photo or document scan at 1 MB, which is roomy enough for a high-quality image while keeping their storage in check.
Can I fit a scanned certificate under 1 MB? ▼
Usually yes, even for a detailed A4 scan. If a colour scan runs over, scanning in grayscale or resizing slightly brings it under 1 MB with the text still legible.
Since 1 MB is large, will quality drop at all? ▼
Barely. The tool uses high JPEG quality at this budget, so a compressed 1 MB image looks the same as the original on screen for almost every photo or scan.
Is the file uploaded to a server? ▼
No. All compression happens locally in your browser — no upload, no account, no server storage.

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