How do I reduce a photo's size without losing quality?

Use WebP or JPEG at 80–85% quality and resize to the size you actually need. The difference is very hard to see, while the file is usually much smaller.

Can I convert PNG to JPG or WebP?

Yes. Choose JPEG or WebP under Output and every image in the list is converted. Transparent parts become white in JPEG; WebP keeps them transparent.

Can I compress many images at once?

Yes. Drop in as many as you like — they all use the same settings — and download them together as a ZIP.

Does it convert HEIC photos?

No. HEIC photos can't be decoded by this tool. Export them as JPEG from your phone first, then compress or convert them here.

Are my photos uploaded?

No. The conversion runs inside your browser, so your photos stay on your device.

How to Compress Images and Reduce Photo Size (Free)

3 min readUpdated 5 October 2026

To compress an image, open Image Converter, drop in your photos, choose WebP or JPEG under Output and lower the Quality slider. The new size and the percentage saved appear straight away; press Download to save.

It's free, there's no sign-up, and it works in any modern browser on a computer or phone. The images are processed on your own device rather than uploaded, so it's quick even for a whole folder of photos, and nothing leaves your hands.

Do it now with Image ConverterFree, no sign-up, works on any device.Open Image Converter

Step by step

1Add your imagesDrop one or many images onto the page, or click to choose them. PNG, JPEG, WebP, GIF and AVIF all work wherever your browser can open them.
2Pick the output formatUnder Output, choose WebP (the default, usually smallest), JPEG (works everywhere) or PNG (lossless, for graphics and transparency).
3Set the qualityMove the Quality slider. Around 75–85% keeps photos looking the same at a fraction of the size; PNG ignores it because it's lossless.
4Resize if neededUnder Resize, choose Pixels and enter a Max width such as 1920, or choose Percent to scale everything at once. Keep aspect ratio stops photos from stretching and never enlarges them.
5Check the savingsEach file shows its old size, new size and dimensions, and the summary shows the total New size and how much you Saved. Every change re-converts automatically.
6DownloadPress Download for one image or Download ZIP for a batch, or download files one by one. Send to… passes them to another tool, such as Image to PDF.

Which format makes the smallest file?

For photos, WebP usually gives the smallest file at the same visual quality and is supported by all modern browsers. JPEG is the safe choice when a website, government form or older app only accepts .jpg.

PNG is lossless, so it's best for screenshots, logos and images with transparency — but a PNG photo is often several times bigger than a JPEG. Converting PNG to JPG is one of the quickest ways to shrink a photo; just note that transparent areas turn white in JPEG.

Hitting a size limit (for example, under 1 MB)

Upload forms often cap files at 1–2 MB. Work through these in order until the New size fits:

Switch the format to JPEG or WebP.
Lower Quality to around 75%.
Resize with Max width — 1920 px is plenty for screens, 1280 px for most forms and chat.
Still too big? Lower the quality a little more, checking the preview as you go.

Tip: Dimensions matter more than quality: halving the width cuts the pixel count by three quarters, often more than any quality setting.

Compressing photos on iPhone and Android

Open the tool in Safari or Chrome, tap the drop area and select several photos from your gallery at once. When they're done, tap Download ZIP to save them together, or download them one by one. If the files come out as .png when you chose WebP, your browser can't save WebP — pick JPEG instead.

HEIC photos from iPhone can't be read by this tool. Choose JPEG versions when you share or export them, or set Settings › Camera › Formats to Most Compatible so new photos are saved as JPEG.

Related image tools

Once your images are a sensible size, these tools are a natural next step:

Image to PDF — put compressed photos or scans into one PDF.
Photo Privacy — check for and remove location data before you share photos.
Background Remover — cut out a product or person first.
Compress PDF — the same idea for PDF files.

Questions people ask

How do I reduce a photo's size without losing quality?: Use WebP or JPEG at 80–85% quality and resize to the size you actually need. The difference is very hard to see, while the file is usually much smaller.
Can I convert PNG to JPG or WebP?: Yes. Choose JPEG or WebP under Output and every image in the list is converted. Transparent parts become white in JPEG; WebP keeps them transparent.
Can I compress many images at once?: Yes. Drop in as many as you like — they all use the same settings — and download them together as a ZIP.
Does it convert HEIC photos?: No. HEIC photos can't be decoded by this tool. Export them as JPEG from your phone first, then compress or convert them here.
Are my photos uploaded?: No. The conversion runs inside your browser, so your photos stay on your device.