Image Compressor: Compress & Convert JPG, PNG, WebP Online

Reduce image file size, resize, and convert between JPG, PNG and WebP. Works on many images at once.

Click to choose images or drag & drop them here

Any size and any common format (JPG, PNG, WebP, GIF, BMP, AVIF). Processed 100% in your browser.

Need an exact size, like under 50 KB, or a photo for an exam form? Use the preset and target size below.

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Free image compressor online: compress, resize and convert images

Large photos slow down websites, fill up email limits and eat storage. This tool makes your images smaller and can change their format, without uploading them. Add one image or many, of any size, choose how much to shrink them, and download the results one by one or as a single ZIP. Processing happens on your own device, so your pictures stay private.

How to compress an image

  1. Drop one or more images onto the upload area, or click it to choose files.
  2. Pick the format to convert to (JPG, PNG or WebP), or keep the original format.
  3. Move the Quality slider. Lower quality means a smaller file.
  4. Optionally set a maximum width or height to make the picture smaller as well.
  5. Check the before and after sizes, then click Download on an image, or Download all (ZIP) for the whole batch.

Compress an image to an exact size in KB

Many forms ask for a picture under a set size, such as 20 KB, 50 KB or 100 KB. Type that number into Target size (KB) and the tool finds the best quality that fits for every image. If even the lowest quality is still too big, it also makes the picture smaller in pixels and tells you. You can also pick a ready-made Under 20 KB, Under 50 KB, Under 100 KB or Under 200 KB preset.

Exact sizes are saved as JPG (or WebP if you choose it). PNG has no quality setting, so it cannot be steered to an exact size. Without a target, use the Quality slider and the maximum width or height as usual. The before and after sizes are shown for every image.

Photo and signature size for exam forms (SSC, IBPS, SBI, UPSC)

Choose your exam in Exam / ID photo preset and add your photo or scanned signature. The tool crops it evenly from the centre to the exact pixel size, saves it as JPG and keeps it inside the allowed KB range:

  • SSC photo: 350×450 px (3.5 × 4.5 cm shape), 20 to 50 KB.
  • SSC signature: 400×200 px (4 × 2 cm shape), 10 to 20 KB.
  • IBPS / SBI photo: 200×230 px, 20 to 50 KB.
  • IBPS / SBI signature: 140×60 px, 10 to 20 KB.
  • UPSC photo: 550×550 px, 20 to 300 KB.
  • Passport size photo: 3.5 × 4.5 cm at 300 dpi, which is 413×531 px.

If a small, plain picture comes out below the minimum, the tool adds harmless padding inside the JPG file so it meets the minimum without changing the picture. Rules change between notices, so always check the size your exam notice asks for. If it differs, keep the preset and type the right number into Target size (KB).

Convert images: PNG to JPG, JPG to WebP, PNG to WebP

Use the Convert to menu to change formats while you compress. Common jobs are PNG to JPG for smaller photos, JPG to WebP or PNG to WebP for faster websites, and WebP to JPG when a site or app does not accept WebP. You can also resize images by maximum width or height.

Which format should I choose?

  • JPG: best for photos. Small files and works everywhere.
  • PNG: best for logos, screenshots and images that need a transparent background. PNG has no true quality setting, so a lower Quality value reduces the number of colours instead, which shrinks the file. Keep 100% for a lossless PNG.
  • WebP: modern format that is often smaller than JPG or PNG at similar quality. Supported by all current browsers.

Converting a PNG with transparency to JPG replaces the transparent area with a solid background, because JPG cannot store transparency.

Why smaller images matter

  • Faster websites: images are usually the heaviest part of a page. Smaller files load faster, which helps visitors and search rankings.
  • Email and uploads: get under attachment and form size limits without opening an editor.
  • Storage and mobile data: save space and bandwidth when sharing photos.

Good settings to start with

  • Photos for a website: JPG or WebP, quality around 70 to 80, maximum width 1600 px.
  • Email attachments: JPG, quality about 70, maximum width 1280 px.
  • Logos and icons: PNG, keep the original size.

Frequently asked questions

How do I reduce the size of a photo in KB?

Add the photo and type the size you need, for example 50, into Target size (KB). The tool finds the best quality that fits and shows the new size beside the photo. Then download it.

How do I resize my photo and signature for an SSC or bank exam form?

Choose your exam in the Exam / ID photo preset menu, add the photo or signature, and download the result. It is cropped to the right pixel size and kept inside the allowed KB range. Check your exam notice in case the rules have changed.

How do I convert PNG to JPG or JPG to WebP?

Add your images, choose JPG, PNG or WebP in the Convert to menu, and download the results.

Is this a bulk image compressor?

Yes. Add many images together and download them all as one ZIP.

Are my images uploaded?

No. Compression happens inside your browser. Your files are never sent to a server.

Is there a file size limit?

The site sets no limit. Very large photos are limited only by your device's memory. If an image is extremely large (over about 80 megapixels, or 16 megapixels on iPhone and iPad), the tool scales the result down slightly and tells you.

Can I process many images at once?

Yes. Add several files together, then download them all as one ZIP.

Which formats can I open?

JPG, PNG, WebP, GIF, BMP and AVIF. Support for other types such as HEIC depends on your browser.

Why does the PNG quality slider change the colours?

PNG files are lossless, so there is no compression level to lower. Like TinyPNG, this tool reduces the picture to fewer colours to make the file smaller. At 100% nothing is changed, and if the result would not be smaller than your original, the original file is kept.

Will quality drop?

Lower quality settings remove some detail. At the middle settings the difference is hard to see on most photos. Check the result and adjust the slider.

Does it work on a phone?

Yes. It works in modern mobile browsers. Very large photos may be scaled down on older phones to avoid running out of memory.

Step-by-step guides

More free tools

PDF toolkit (turn images into a PDF) · CSV converter · Bulk QR codes · Read the guide: reducing image size for the web