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Compress Images: JPG, PNG and WebP

Shrink photos for email, websites and upload forms. Choose the quality, resize or switch to WebP, and see exactly how much smaller each image gets.

How to compress an image

  1. 1

    Choose your images

    Pick up to 20 JPG, PNG or WebP images. They open for the current task and are not retained by PilotPDF.

  2. 2

    Pick the quality and format

    80% quality suits most photos. Switch to WebP for the smallest files, make the images smaller in size, or set a file size to aim for.

  3. 3

    Compare and download

    Each image shows its size before and after. Check it with the Before and After buttons, then download one image or all of them in a ZIP.

The quickest way to a much smaller photo

Photos from a phone are often 4000 pixels wide, far more than a screen, a website or an email ever shows. Choosing Up to 1920 px under Image size usually cuts the file to a fraction on its own, without any visible difference.

Then choose the quality. Around 75 to 80% keeps photos looking the same to most people. Below about 60%, you may start to see blurry edges or blocky skies.

If a website or form has a size limit, like 50 KB for a photo or 20 KB for a signature, tick Aim for a file size and pick the limit. The tool finds the best quality that fits.

Filling in an exam or job form? Compress an image to 20 KB.

JPG, PNG or WebP?

JPG is the everyday photo format and opens everywhere. PNG keeps every pixel exactly, which makes it right for screenshots, text and logos with see-through backgrounds, but wrong for photos, where it makes huge files.

WebP does both jobs well and is usually the smallest of the three. All modern browsers show it, so it's a great choice for websites. Some older programs and upload forms still only accept JPG, so check before you switch.

Compressing makes a new copy. Your original image isn't changed, and the copy leaves out hidden details such as the GPS location and camera model.

Your files are never retained by PilotPDF

PilotPDF does not keep copies of your original files, completed files, passwords, or document contents after processing.

Read our privacy policy for details about analytics and data handling.

Related tools

Resize Image

Set an exact width and height in pixels.

Crop Image

Cut away the parts you don't need first.

JPG to WebP

Convert photos to WebP without other changes.

Compress PDF

Make a PDF file smaller instead.

Frequently Asked Questions

Choose your images, pick a quality (80% is a good start), and click Compress. Each image shows its size before and after, and you can download them one by one or all together in a ZIP.
At 70 to 80% most photos look the same to the eye but are much smaller. Lower settings make smaller files but can show blurry or blocky patches. Use the Before and After buttons to check.
WebP files are usually much smaller than JPG or PNG at the same quality, and every modern browser can show them. If the image is going into an older program or a form that only accepts JPG, choose JPG instead.
Tick Aim for a file size and pick a limit: 20 KB, 50 KB, 100 KB, 200 KB, 500 KB or 1 MB, or type your own in MB. The tool lowers the quality until the image fits and, if it has to, makes it a little smaller in size too.
PNG doesn't throw any detail away, so photos saved as PNG stay big. Choose WebP or JPG for photos. Keep PNG for screenshots, logos and images with see-through backgrounds.
Sometimes, if the image was already well compressed. When that happens and you haven't asked for a new format or size, the tool keeps your original image quality, still removes the hidden details, and says it was already small.
Yes. Choose a size under Image size, such as 1920 px for Full HD or 1280 px for websites and email. The image keeps its shape and is never made bigger.
Yes. Saving the compressed copy drops hidden photo details such as the GPS location, camera model and date taken. Your original file isn't changed.
Up to 20 at a time. They're compressed one after another without PilotPDF retaining a copy, so very large batches take longer on older phones.
No. PilotPDF does not retain your original or compressed images.