Compress images for email

Reduce photo size so your emails send faster and never bounce. Works with Gmail, Outlook, and Yahoo.

Free, no signupWorks offlineNo upload, ever

📸

Drop an image to startTap to choose an image

PNG, JPG, WebP, AVIF, HEIC, BMP, SVG, GIF, TIFF

Pro tools Pro

Platform

Pro

Presets limit your photo’s longest side and keep its shape — nothing is cropped, so the result matches the named size only when your photo already has that shape.

ProUnlocks one-click platform presets for Instagram, LinkedIn, X, YouTube, WhatsApp, and more.See Pro plans

Responsive set

Pro

Also export as

Pro

Your Format choice is always saved. These add more copies of the same image — one per format, at each width you tick above and only at those widths — bundled in a single ZIP. Tick no width and the extra formats come at your original size.

With Pro, 1 image → up to 17 files · A width larger than your original is never upscaled, so those collapse into one file.

ProPro unlocks responsive image sets and multi-format export, packaged in a single ZIP.See Pro plans

Rename pattern

Pro

Saved presets

Pro

ProPro unlocks saved presets — bundle your responsive set, format, watermark, codec and rename template into one named profile you apply with a single click.See Pro plans

Free foreverOffline-readyImages never uploaded

Why MiniPx

Built for people who care how images travel.

100%On-device

This compressor never uploads.

Every byte processed in your browser. No copy, no trace. Cloud HD — the Pro-only option on 7 AI tools — is the one exception on the site.

50–90%Smaller

Honest compression.

Multi-pass encoding that respects your image. No silent quality cliffs.

5Files per batch

No quota. No credits. No watermark.

Five files a batch on the free tier, unlimited batches — Pro lifts the cap. Your device is the only real ceiling for compression, because your device does the work; only Pro Cloud HD runs are metered.

8Formats

Native to every modern format.

PNG · JPG · WebP · AVIF · BMP · SVG · GIF · TIFF

MiniPx

Settings

Mode

Format

Compression

Custom quality

65%

TinyMax

Max width

Privacy

EXIF data always removed

Every output drops GPS location, device info & timestamps

More tools

Everything stays on your device.

Runs in: Your browser, on your device
Upload: None — nothing is uploaded
Signup: Not needed
Watermark: None added by MiniPx
Limits: No quota. Batch tools take 5 files at a time on Free; Pro lifts the cap
Output: A file saved straight from your browser

Compress Images for Email — Free, Fast & Private

Email providers enforce strict attachment size limits: Gmail caps personal accounts at 25MB, the Outlook app caps internet accounts at 20MB per email (Outlook.com on the web allows 25MB), Yahoo Mail allows 25MB in total, and Exchange business accounts default to 10MB. High-resolution phone photos at 5-15MB each means you can only attach 1-2 photos before hitting the limit and getting bounced emails.

MiniPx compresses your images to email-friendly sizes in seconds. The ideal size for email images is 100-300KB at 1280px width. This looks great on any screen while keeping total email size manageable — you can attach 20-50 compressed images and still stay under Gmail's 25MB limit.

For professional emails with multiple image attachments, batch compression is essential. Add all your photos to MiniPx at once, compress with the Smart preset at 1280px width, and download them all as a ZIP. Each compressed photo typically comes out at 100-300KB — small enough for any email provider.

MiniPx also strips EXIF metadata (GPS coordinates, device info, timestamps) from your photos by default. This is important when emailing images to clients, colleagues, or strangers — you do not want your location data embedded in the attachments.

All processing happens in your browser — your photos are never uploaded to any server, making MiniPx safe for confidential business images, personal photos, and sensitive documents.

Limits checked on 6 October 2026 against Gmail Help, Microsoft Support (Outlook app), Microsoft Support (Outlook.com) and Yahoo Help.

How it works

Upload your photos: Add all the images you want to email.
Select Smart preset: Smart compression gives the best balance of quality and size for email.
Set max width to 1280px: This produces ideal dimensions for viewing on screen.
Download and attach: Save compressed images and attach to your email. Typically 100-300KB each.

Frequently asked questions

What is Gmail's attachment size limit?

For personal Gmail accounts the limit is 25MB; over that, Gmail swaps the attachment for a Google Drive link. Work and school accounts follow their administrator's limits. Compressing images with MiniPx to 100-300KB each lets you attach many more photos per email.

What is Outlook's attachment size limit?

The Outlook app limits internet accounts such as Outlook.com or Gmail to 20MB per email, and Exchange business accounts default to 10MB. Outlook.com on the web allows attachments up to 25MB.

Why are my emails bouncing because of size?

When total attachment size exceeds your provider's limit, the email bounces back. Uncompressed phone photos at 5-15MB each exceed most limits after just 1-2 images. Compress with MiniPx first to reduce each image to 100-300KB.

What size should email images be?

For email attachments, 100-300KB per image at 1280px width is ideal. This keeps total email size well under limits while images look sharp on any device. Recipients can view and download images quickly without waiting.

Will recipients notice the compression?

At Smart quality (65%) and 1280px width, the compression is invisible when viewing on screen. Images look identical to originals in an email context. Only extreme zooming would reveal any difference.

Can I compress multiple photos at once for email?

Yes. The free tier compresses 5 photos per batch and Pro removes the cap, with no daily quota either way. Download the batch as a ZIP, then extract and attach.

Does compressing images remove my location data?

Yes. MiniPx strips all EXIF metadata by default, including GPS coordinates, device model, and timestamps. This protects your privacy when emailing images to people you do not fully trust.

How do I send large photos by email?

For photos you want to keep at full resolution, use a cloud link (Google Drive, Dropbox). For photos where visual quality at screen resolution is sufficient, compress with MiniPx first — this is faster for both sender and recipient, and works even on slow connections.

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