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Compress Image to 300KB

Fit 300KB: sharper scans and larger profile images.

KB
Advanced (optional): exact pixels or minimum KB

Many forms ask for pixels as well as KB. Leave empty if yours does not. Examples are common sizes only – always use the size your form states.

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✅ Done! Your images are ready

By Yasir, Lahore · Last reviewed October 25, 2026

300KB for detail that matters

300KB keeps fine detail: document stamps, small print on labels and the texture of fabric in product shots. At around 1200 pixels wide it fills most laptop screens without looking compressed.

Example. A product photo straight from a phone might be 4 MB at 4000 pixels wide. For a listing that allows 300KB, the tool usually brings it to about 1200 pixels wide with quality that still looks natural next to other listings.

Where it fits

  • Marketplace and store images with a cap per picture.
  • Scans of certificates with small seals or signatures.
  • Profile pictures in applications that allow more than 200KB.

Check before uploading

  • Whether the portal also limits width or height.
  • Whether it rejects images with a very wide aspect ratio.
  • For online shops, read how to compress product photos.

Before you batch a whole catalogue

Flat, plain backgrounds cost fewer bytes than busy ones, so a product shot on white reaches 300KB with less quality loss than the same item on a patterned table. Crop all the photos to the same shape first, for example square, so every listing looks consistent after compression. Then select the whole set at once and download one ZIP.

Questions about: Compress Image to 300KB

When should I choose 300KB instead of 200KB?

When the form allows it and the picture has fine detail you want to keep, such as small text or textures.

Does this make a print-ready image?

No. For printing you need far more pixels. This is for screens and uploads.

Can I process many product photos at once?

Yes. Select them together and download one ZIP.

About the Compress Image to 300KB tool

This page compresses an image to 300KB or less. It is a good fit for product pictures, email attachments and forms with a mid-sized cap. The tool lowers the JPG quality only as far as needed, so the picture stays clear.

How to use the Compress Image to 300KB tool

  1. Tap “Select Images” and choose your JPG, PNG, WebP or HEIC file.
  2. The size box is already set to 300. Change it only if your form states a different limit.
  3. Select all your photos together if you have a batch, and download the ZIP when the list finishes.
  4. Press the green button, check the Before and After sizes, then download the file (or the ZIP if you added several).

More questions about Compress Image to 300KB

Which image types can I upload for 300KB?

You can upload JPG, PNG, WebP or HEIC. The downloaded file is a JPG.

Will the pixel dimensions change?

Only if quality reduction alone is not enough. When the limit is generous, as it is at 300KB, most photos keep their original pixel size.

Related sizes and tools

300 KBCompress to 200 KBCompress to 500 KBIncrease to 300 KBCompress WebP to 100KBCompress iPhone HEIC Photo to 100KBHow to Compress Images for Email and Fix "Attachment Too Large"

Need the opposite? Try Increase image size to 300KB.

Every ready-made size is listed on the Image Resizer to KB page. Prefer a percentage instead of a KB size? Use the quality-based image compressor, or read our image guides.