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Compress Image Online

Make photos and pictures smaller in KB, either with a quality level or by aiming at an exact size such as 20 KB, 50 KB or 100 KB. Compare before and after, then download. Nothing is uploaded.

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  • No signup
  • Nothing uploaded
  • No watermark

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PNG, JPG, WebP, SVG, BMP, GIF · read on your device, never uploaded

Converted entirely on your device. Nothing was uploaded.

How to Reduce Image Size in KB

Compress Image Online: before and after PNG A BEFORE COMPRESS IMAGE PNG A AFTER

“Photo must be under 50 KB.” “Signature between 10 and 20 KB.” “Attachment too large.” A modern phone photo weighs several megabytes, and forms, portals and email keep saying no. Compressing stores the same picture using fewer bytes, usually with no difference you can see.

Add your images, pick the output format, then choose how to compress. Quality level gives you Strong, Balanced or Light with a live size estimate and a before-and-after slider. Target file size lets you press 10, 20, 50, 100, 200 or 500 KB or 1 MB, or enter a number of your own; the highest quality under that limit is searched out for you, with the picture scaled down only as a last resort.

It all runs in your browser. Your photo, signature or scanned certificate is never handed to a server to be squeezed.

No software to install Free Works on any device

Shrink Your Photo in Six Steps

Each step matches a part of the compressor above.

  1. 1. Open the Compress Image tool

    You are already here. Phones, tablets and computers all run it in the browser, so you can compress straight from your gallery.

  2. 2. Add your images

    Pick images from your device, or drop them into the dashed area. PNG, JPG, WEBP, GIF, BMP and SVG all work, and a batch is fine.

  3. 3. Choose the output format

    Under Output format, pick JPG for photos, PNG for signatures, logos and screenshots, or WEBP for websites. The format matters more than any slider for how small a file can get.

    PNGJPGWEBPAVIF

  4. 4. Set pixel size if the form asks

    The "Output size in pixels" boxes are optional. Leave them empty to keep the original dimensions, or type a size such as 200 × 230 and untick "Keep the original proportions" to use both numbers exactly.

  5. 5. Pick a level or a target

    Under "Compress by", choose Quality level and pick Strong, Balanced or Light, or switch to Target file size and select a preset or enter your limit in KB.

    Target presets:

    • 10 KB and 20 KB for signatures
    • 50 KB and 100 KB for application photos
    • 200 KB, 500 KB and 1 MB for email and websites

  6. 6. Check and press Compress images

    Drag the divider on the before-and-after view to check quality, then press Compress images. One file downloads directly, several arrive in a ZIP, and the list shows each size before and after.

No .png file to hand? Download a sample Image file (253.4 KB) and try it.

Try it now

What is Image Compression?

Image compression stores a picture in fewer bytes. JPG and WEBP do it by quietly dropping detail too small for most people to see, which is why a quality setting exists: lower quality means a smaller file and, eventually, visible blur and blockiness.

PNG is lossless, so it has no quality setting. The way to shrink one is to store fewer colours, which suits signatures, logos and screenshots but can make photos look banded. When a strict KB target cannot be met by quality alone, the only remaining step is fewer pixels, so this tool shrinks the picture in small steps until the file fits.

Image

.JPG .PNG .WEBP

The same picture in fewer kilobytes, ready for forms, email and the web.

Why people compress images

  • Exam and job form photos
  • Signature uploads
  • Email attachments
  • Faster websites
  • Product photos for shops
  • Saving phone storage
  • Quicker sharing on chat apps

Why Compress Images First?

Big pictures fail uploads, bounce off email servers and make web pages crawl on mobile data. A well-compressed photo looks the same to the person viewing it but moves across the internet many times faster.

“A 4 MB photo and a 200 KB photo usually look identical on a phone screen.”
  • Pass upload size limits
  • Faster page loading
  • More free storage
  • Many images at once
  • Send more photos per email
  • Less mobile data used
  • Quality you can check first
  • Pictures stay on your device

Popular Uses for Image Compression

Size rules this compressor is used to satisfy every day.

  • Government exam forms Bring a photo under 50 KB or a signature under 20 KB at the pixel size the notice gives.
  • Job applications Meet a portal’s KB limit for profile pictures and scanned documents.
  • Email attachments Fit a batch of photos under your mail provider’s attachment limit.
  • Website images Make pages load faster by trimming each picture to a sensible size.
  • Marketplace listings Keep product photos light enough to upload quickly to a seller panel.
  • Scanned signatures Compress a signature scan as PNG so the ink stays crisp at 10 or 20 KB.
  • Chat and social sharing Share photos without long waits on slow mobile connections.
  • Freeing up storage Store lighter copies of old photos on a phone or drive.

Compress Image Features

Two ways to compress, and a clear view of the result.

Target

Aim at an exact size

Pick a preset or type any figure in KB, and the highest quality that fits is found for you.

Presets:

  • 10 KB
  • 20 KB
  • 50 KB
  • 100 KB
  • 200 KB
  • 500 KB
  • 1 MB
Quality

Three simple levels

Strong for the smallest file, Balanced as the recommended middle, Light for the best quality.

Preview

Before and after slider

Drag a divider across the picture to compare the original with the compressed version.

Pixels

Resize in the same step

Set width and height too, for forms that give both a pixel size and a KB limit.

Formats

Four output formats

Save as JPG, PNG, WEBP or AVIF, depending on the picture and where it is going.

Batch

Several images together

Compress many pictures with one set of options, and receive the whole batch bundled as one ZIP.

Why Use ToolXkit to Compress Images?

Photos are not uploaded

Your pictures are compressed inside the browser tab. No server sees your ID photo or signature.

Compress Image for Every Upload

Exam applicants

Meet photo and signature KB limits on government forms.

Job seekers

Get profile photos and documents under portal limits.

Website owners

Keep pages quick with lighter images.

Online sellers

Upload product photos faster.

Office workers

Send photo reports without bounced emails.

Families

Share holiday pictures quickly on chat apps.

When to Compress a Photo

Compress your picture when you are:

  • Told the photo must be under a KB limit
  • Uploading a scanned signature
  • Hitting an email attachment limit
  • Adding pictures to a website
  • Listing products on a marketplace
  • Running out of phone storage
  • Sharing on a slow connection
  • Completing a job application

Tips for Small but Clear Compressed Images

  1. Choose JPG for photos. Leaving a camera photo on PNG can make the file larger, not smaller.

  2. Keep signatures and logos as PNG. Fewer colours shrink them well while keeping edges crisp.

  3. If the form gives pixel dimensions, enter them too. Fewer pixels make small KB targets far easier to reach.

  4. Crop away empty background before compressing. Every pixel you remove is a pixel that does not need storing.

  5. Aim a little under the limit, for example 45 KB for a 50 KB rule, in case the portal counts sizes differently.

  6. Drag the before-and-after divider over faces and text, where compression damage shows first.

  7. Keep the original. You cannot add back detail once a picture has been compressed hard.

Frequently Asked Questions

Answers to common questions about this tool.

How do I reduce photo size to 50 KB?

Add the photo, set Output format to JPG, switch Compress by to Target file size, tap the 50 KB preset, then press Compress images. The tool finds the highest quality that stays under 50 KB, and scales the picture down slightly only if quality alone is not enough.

How do I compress an image to 20 KB for an exam form?

Switch Compress by to Target file size and tap 20 KB. If the notice gives pixel dimensions, such as 200 × 230, type them in "Output size in pixels" and untick "Keep the original proportions". Pick JPG for a photo, or PNG for a signature.

How do I compress an image without losing quality?

Choose Quality level and Light. The saving is smaller, but the picture looks the same. Balanced is usually indistinguishable too. Drag the before-and-after divider to check with your own eyes before downloading.

Why did my compressed image get bigger?

The output format was probably PNG while the original was a JPG photo. PNG stores photos inefficiently. Switch Output format to JPG or WEBP and compress again, and the file will shrink.

How do I reduce the KB of a signature image?

Keep Output format on PNG, then pick Target file size with the 10 KB or 20 KB preset. The number of colours is reduced until it fits, which suits dark ink on white paper. Crop the signature tightly first for the best result.

What does it mean when it says the image cannot reach the target?

Even at the lowest useful quality and a much smaller size, the picture stayed above your limit. The message tells you the smallest size it reached. Try a larger target, crop the picture, or set smaller pixel dimensions.

Can I compress many images at once?

Yes. Add as many as you like, all sharing one set of options. The finished batch arrives as a single ZIP, and a badge shows the overall percentage saved.

Does anyone else get a copy of my images?

No, never. The squeezing is done by this tab, locally, and the smaller file is saved for you. Nobody else ever receives your photos, signatures or scanned certificates.

Which format gives the smallest file?

For photos, WEBP is usually smallest, with JPG close behind and accepted everywhere. For signatures, logos and screenshots, a PNG with fewer colours is often smallest and sharpest. Many exam forms accept only JPG, so check the notice.

Can I compress photos on my phone?

Yes. Visit the page in Chrome or Safari on your handset, select pictures, set a target and tap Compress images. The compressed photo lands in your downloads.

Does compressing remove photo location data?

Yes. The new file is written from the picture’s pixels alone, so camera details and GPS coordinates stored in the original are left behind.

Can I compress an image to 100 KB and also change its size in cm?

The tool uses pixels. Convert centimetres by dividing by 2.54 and multiplying by the DPI the form gives. For example, 3.5 × 4.5 cm at 200 DPI is about 276 × 354 pixels. Type those, then set the 100 KB target.

Does Compress Image reduce my photo’s quality?

Converting and cropping keep quality close to the original. Compressing trades a little detail for a much smaller file, and a lighter setting keeps more of it. Compare the preview with your original before saving.

Are my photos uploaded to a server?

No. Pictures are opened and changed inside your browser, and the result is saved to your device. Family photos, ID scans and signatures are never sent anywhere.

Further reading

  • Image compression Lossy and lossless compression and how each makes pictures smaller.
  • JPEG The photo format whose quality setting trades detail for size.
  • WebP Google’s page on the WebP format for smaller web images.
  • Exif Background on the hidden metadata cameras write into each picture.

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