IMAGE, PDF & AI TOOLSLOCAL FIRST. AI WHEN YOU NEED IT.
FILEUNBOXFILE TOOLS

FILES, SIMPLIFIED.

简体中文INVITE BETAHow it works
Open the workbench
QUICK TOOLS
Image compressorImage resizerImages to PDFSplit PDFImage to ExcelPDF OCR

Images / Image compressor

Compress an image to 100 KB

Choose a JPG, PNG or WebP photo. The target is already set to 100 KB. Save the result as JPG or WebP and check its size before submitting your form.

Compare the original and output ↓
LOCAL · NO UPLOAD

Image compressor

A simple change, handled right here in your browser.

1Add files2Set & process3Download

Drop a file. Start something.

Choose files from your device

JPG, PNG, WebP · up to 10 MB each
MAKE IT YOURS02

Processed on your device. Files are never uploaded.

Choose JPEG or WebP quality, or a target size. A target is best effort; we tell you if it cannot be met.

WORKED EXAMPLE

One map, before and after compression

Compressed contour map, visible on the rightOriginal JPG at the same position, visible on the left
Original · 261,974 BOutput · 96,329 B
Left: source JPG. Right: actual download. Both are 1040 × 700 pixels. The 100 KB setting reduced this file by about 63%. Results vary by image. Download the full-size result ↓

Which upload limit do you have?

100 KB maximum

A 75 KB photo already fits a 100 KB maximum. You do not need to enlarge it to exactly 100.

Under 100,000 bytes

This tool uses 1,024 bytes per KB. A 97 KB target is 99,328 bytes; verify the saved file because the encoder may miss the target.

Also needs 600 × 800 pixels

Compression keeps the pixel dimensions. Crop to the required aspect ratio first, then resize and compress.

From source file to download in three steps

  1. Add your image or try the landscape map. Keep JPG selected if the form asks for a photo in JPEG format.
  2. Leave the target at 100 KB, or enter 97 for a strict 100,000-byte ceiling. Process the file and check the result size.
  3. Open the download at full size. If fine print is hard to read, keep the original and try a tighter crop in your editor before compressing again.
Select JPG and 100 KB. For a decimal byte limit, select the strict option and check the size after processing.
Select JPG and 100 KB. For a decimal byte limit, select the strict option and check the size after processing.

Common questions

Why is my download still over 100 KB?

Fine texture and large dimensions can exceed the target even at low quality. Reduce dimensions and run the smaller copy through the compressor.

Will a transparent PNG keep its background?

JPEG fills transparent areas with the background color you select. Use WebP if transparency matters and your form accepts it.

Continue working with your file

Read the upload-size guide →Reduce pixel dimensions →Compress using a custom target →

Files are processed locally. Download and check the result before closing this page. File privacy

FileUnbox · · About our samples and testing

Compress an image to 100 KB ↑

A place for every small file task.

JPG to PNGPNG to JPGWebP to JPGWebP to PNGImage compressorImage resizerImages to PDFMerge PDFSplit PDFPDF to ExcelImage to ExcelPDF OCRImage to text