Email Signature Image Resizer
Resize logos and photos to the correct dimensions for email signatures. Keep file size under 50KB for reliable rendering across all email clients.
- 1
Upload your logo or photo
Upload the image you want to use in your email signature — JPG, PNG, or WebP.
- 2
Set email signature dimensions
Enter your target width: 200-300px for logos, 80-100px for profile photos. Height scales automatically.
- 3
Compress for email
The tool compresses to under 50KB — critical for email clients that block large images.
Email Signature Image Resizer
Resize logos and photos to the correct dimensions for email signatures. Keep file size under 50KB for reliable rendering across all email clients.
Free plan: images are optimized locally in your browser — private, fast, no credits.
Suggested limits for this browser load after the page opens.
Want larger batches or more credits? See plans & pricing ·
JPEG, PNG, WebP, GIF, AVIF, TIFF — drop a folder to include nested images.
Why use Email Signature Image Resizer?
Resize logos and photos to the correct dimensions for email signatures. Keep file size under 50KB for reliable rendering across all email clients. All processing runs locally in your browser for privacy and speed — nothing is uploaded to our servers.
Free without sign-in
Up to 100 optimizations per day. Batch and file-size suggestions adapt to your device (RAM and CPU) — you can override warnings when optimizing.
Sign in for direct cloud export (Google Drive, Dropbox, OneDrive). Everyone shares the same 100/day device-safe limit.
Explore more workflows on our image tools hub.
How to use Email Signature Image Resizer
- 1
Upload your logo or photo
Upload the image you want to use in your email signature — JPG, PNG, or WebP.
- 2
Set email signature dimensions
Enter your target width: 200-300px for logos, 80-100px for profile photos. Height scales automatically.
- 3
Compress for email
The tool compresses to under 50KB — critical for email clients that block large images.
- 4
Download
Download your email-ready image and embed in your email client's signature settings.
Frequently Asked Questions
What size should an email signature image be?
Logos: 200-300px wide, under 50KB. Profile photos: 80-100px wide, under 30KB. Use 72 DPI and JPG format for maximum email client compatibility.
Why doesn't my email signature image display in some clients?
Many email clients block images over 50KB or images hosted on unfamiliar servers. Keep file size under 50KB and host the image on a reliable CDN or embed it as base64 in your signature HTML.
Should I use PNG or JPG for email signatures?
Use PNG for logos with transparent backgrounds. Use JPG for photos and logos on solid backgrounds — JPG files are smaller and more compatible across email clients.
What DPI should email signature images be?
72 DPI is standard for screen display and email. Higher DPI (300) is only needed for print. Using 72 DPI keeps file size smaller.
Can I make a transparent logo for email signatures?
Upload a PNG with a transparent background and resize it here. The transparency will be preserved in the PNG output. Note: some email clients (Outlook) may show a white or gray background behind transparent images.