Gmail and Outlook cap individual attachments well under their advertised total limits in practice — a single large photo from a modern phone camera can bounce an email entirely. A safe target is under 1MB per image, which keeps well clear of any provider's real-world limit while staying visually excellent.
or drop it anywhere in this box
JPG, PNG, WebP · processed locally on your device
Custom target, 2–10240 KB
Match the portal's rule
Converting PNG with transparency to JPG fills the background white.
One tap applies the exact dimensions, format, and file-size rule for the form. Verified presets are checked against the official source.
0 KB— KB
ORIGINAL—
RESULT—
Everything runs in your browser using the HTML5 Canvas — your photo is never uploaded to any server.
AD SLOT — BELOW TOOL
Why emails bounce over photo size
Modern phone cameras produce 3–8MB photos routinely. Most email providers technically allow larger attachments in aggregate, but individual large files trigger slow uploads, recipient inbox limits, or silent delivery failures — especially to corporate email systems with stricter caps than consumer webmail.
The 1MB safe zone
Compressing to roughly 1024KB keeps a photo looking essentially identical to the original while comfortably clearing every major provider's practical limit. This tool's default target is set to exactly that — one click, no size math required.
Frequently asked questions
What's Gmail's actual attachment limit?
25MB total per email, but very large individual images can still cause upload slowness or recipient-side rejection — 1MB per photo is a safe practical target, not Gmail's hard ceiling.
Will 1MB compression be noticeably lower quality?
No — at typical camera resolutions, 1MB is well within the range where compression is visually lossless to the eye.