What is the Gmail attachment size limit?

Gmail allows attachments up to 25 MB. If your combined attachments are larger, Gmail switches to a Google Drive link instead of attaching the file directly. Compressing the image below 25 MB lets it attach normally.

Are my images uploaded to a server?

No. Everything runs entirely in your browser using HTML5 Canvas. Your images never leave your device, nothing is uploaded, and there are no accounts or tracking. It works even with the network disconnected after the page loads.

Which image formats are supported?

You can compress JPEG, PNG and WebP images. You can keep the original format or convert the output to JPEG, WebP or PNG. JPEG and WebP usually give the smallest files for photos; PNG is best for graphics with sharp edges or transparency.

Does compressing reduce image quality?

Compression trades a small amount of visual quality for a much smaller file. At quality settings around 70 to 85 the difference is usually invisible for photos. When you target a size limit, the tool finds the highest quality that still fits under your chosen size.

Can I compress many images at once?

Yes. Drop in multiple images and they are all compressed with the same settings. Each result shows the original size, new size and percent saved, with a download button per image plus a Download all button.

Image Compressor

Name: Free Image Compressor
Author: Easy Ecommerce Group

Shrink photos so they fit under email attachment limits — free, no signup, nothing leaves your browser.

100% in your browser No uploads, no signup JPEG · PNG · WebP

Drop images here

or click to choose files · JPEG, PNG, WebP · one or many

Compression settings

Target maximum size (per image)

We lower quality automatically (and resize if needed) until each image fits under the limit.

Output format

Max width / height (px) — optional

Strip metadata (EXIF & GPS location) Removes the camera info and GPS coordinates phones embed in photos. On by default for privacy; also trims a little size. Re-compressed images are always metadata-free.

Compress images to fit email attachment limits

You try to email a photo and your mail app says it is too big. Gmail caps attachments at 25 MB and Outlook at around 20 MB. Drop the image in here, choose your email provider, and download a smaller version that actually attaches — without installing anything, creating an account, or uploading your photo to a stranger's server. It is just as handy for trimming heavy product images so your ecommerce store loads faster.

Fits email limits

One-click Gmail and Outlook presets shrink any photo below the attachment cap.

Truly private

Your images are processed on your device. Nothing is uploaded, stored, or tracked.

Fast & free

No signup, no ads, no watermarks. Batch many images with one set of settings.

Frequently asked questions

How do I compress an image to fit an email attachment limit?

Drag your photo into the drop zone, choose a size target like Gmail (25 MB) or Outlook (20 MB), and click Compress. The tool automatically lowers the image quality — and reduces the dimensions if it still does not fit — until the file is under that limit. Then download the smaller file and attach it to your email as normal.

What are the Gmail and Outlook attachment size limits?

Gmail allows attachments up to 25 MB. Above that, Gmail replaces the file with a Google Drive link instead of attaching it directly.

Outlook typically limits attachments to about 20 MB (the exact figure varies by account type). Keeping each image below these numbers means it attaches the normal way, so the recipient gets the actual file.

Are my images uploaded anywhere?

No. The compression runs entirely in your browser using HTML5 Canvas. Your images never leave your device, nothing is sent to a server, and there are no accounts, cookies, or tracking pixels. Once the page has loaded you can even turn off your internet and it still works.

Which format should I choose: JPEG, WebP, or PNG?

JPEG is the safest choice for photographs and email — small files and universal support.

WebP usually produces the smallest file of all and is supported by every modern browser and most email clients, but a few old apps cannot open it.

PNG is lossless, best for screenshots, logos, and graphics with sharp edges or transparency, but the files are larger. For shrinking a photo to email, pick JPEG or WebP.

Will compressing ruin the image quality?

Compression trades a little visual quality for a much smaller file. Around 70 to 85 quality the loss is usually invisible for photos. When you target a size limit, the tool searches for the highest quality that still fits, so you keep as much detail as possible while landing under the cap.

Can I compress images for my ecommerce store?

Yes. Lighter product images make your store load faster, which improves both conversions and search ranking. Set a sensible max width (for example 2000 px), choose WebP or JPEG, and batch all of your product shots at once. Faster pages are one of the easiest wins in ecommerce growth.

Want your whole store to load this fast?

Easy Ecommerce Group helps brands tighten performance, conversion, and growth. Book a free audit and we will show you where the easy wins are.

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