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 10 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 compresses JPG and PNG on the free plan, and adds WebP, AVIF, HEIC, GIF, TIFF, SVG and PDF on any paid plan. All formats can be compressed to exactly 25MB.