Compress Image to 25MB
25MB is Gmail's attachment size limit. SizeSnap compresses your image to exactly 25MB — the maximum quality you can email through Google's servers.
Target file size
25MB
Unlike TinyJPG or Squoosh, SizeSnap lets you specify the exact target size — not just “smaller.”
How to Compress an Image to 25MB
- 1
Upload your high-resolution image or print proof to SizeSnap.
- 2
Set the target to 25MB using the size selector.
- 3
Click Compress — SizeSnap binary-searches for the best quality under 25MB.
- 4
Download and attach to your Gmail, Yahoo Mail, or Google Workspace email.
Why Compress to 25MB?
Gmail's 25MB attachment ceiling is one of the most widely encountered file-size limits on the internet. Compressing a high-resolution image to exactly 25MB lets you email the highest possible quality through Gmail without the file being rejected or automatically converted to a Google Drive link. Graphic designers sending print proofs to clients, real-estate agents emailing high-resolution property photos, and marketing teams sharing campaign assets all benefit from hitting this exact target. Yahoo Mail also enforces a 25MB per-attachment limit, as do many corporate email systems running Google Workspace. At 25MB, a 50-megapixel camera export retains exceptional detail — more than enough for full-page magazine prints at 300 DPI.
Tips for Compressing to 25MB
Gmail measures attachment size after Base64 encoding, which inflates file size by roughly 33%. A 25MB file may appear as ~33MB in the email. SizeSnap targets the raw file size — if Gmail rejects the attachment, try 18MB instead.
For print proofs, 25MB is more than sufficient for A4/letter-size prints at 300 DPI with JPEG compression.
If you regularly email large images, consider setting up a SizeSnap bookmark at 25MB for one-click access.
Frequently Asked Questions
- Is compressing to 25MB free?
- Yes, SizeSnap is free for up to 3 compressions per day. No account needed.
- Does SizeSnap work on mobile?
- Yes, SizeSnap runs entirely in your browser and works on any device — iPhone, Android, tablet, or desktop.
- Will my image lose quality when compressed to 25MB?
- SizeSnap uses smart compression that minimizes visible quality loss. For 25MB, virtually no quality loss — this is a generous target that preserves fine detail.
- What image formats are supported?
- SizeSnap supports JPEG, PNG, WebP, and HEIC images. All formats can be compressed to exactly 25MB.