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Local browser workspace

Fast, free, browser-only tools. Your files stay on your device.

Compress PDF Merge PDFs
60 browser tools Works on mobile Free to use

No File Logs

We do not upload, store, or track the files you process.

No Backend

All processing happens inside your browser.

100% Free

Every tool is free. No hidden costs.

Total Transparency

Built for trust with clear local limits.

Image Tools / Stable

Compress Images Online

Reduce image size by choosing an output format, quality level, and optional dimensions.

About this tool

About Compress Image

Reduce image size by choosing an output format, quality level, and optional dimensions. The selected image is processed locally in this browser without being sent to a backend conversion server. Stronger lossy compression can introduce blur, ringing, or block artifacts.

Use Compress Image when you need to reduce image file size with format and quality controls. Common uses include prepare images for email, meet a website upload limit, create lighter web assets.

How to use Compress Image

  1. Choose one or more images.
  2. Select the output format and quality.
  3. Adjust dimensions when a smaller pixel size is acceptable.
  4. Compress, compare, and download the result.

What Compress Image changes

  • Re-encodes image pixels with the selected format and quality.
  • Can reduce pixel dimensions when resizing is requested.

Browser-only privacy

The selected image is processed by JavaScript running in this browser for Compress Image. NoLogPDF does not send the file to a backend conversion API, and file names, contents, form values, passwords, and output data are excluded from site analytics.

Limits to know before using Compress Image

  • Stronger lossy compression can introduce blur, ringing, or block artifacts.
  • Already-small images may not shrink and lossless PNG can remain larger than JPG or WEBP.

Common uses for Compress Image

  • Prepare images for email.
  • Meet a website upload limit.
  • Create lighter web assets.

Next step: Continue this workflow with Crop Image.

Compress Image questions

How does Compress Image work?

Reduce image size by choosing an output format, quality level, and optional dimensions. Choose one or more images. Select the output format and quality. Adjust dimensions when a smaller pixel size is acceptable.

Does Compress Image upload my image?

No. The selected image is read by code running in this browser for this operation. NoLogPDF does not send the selected file to a backend conversion API or include file data in analytics.

What does Compress Image change in the output?

Re-encodes image pixels with the selected format and quality. Can reduce pixel dimensions when resizing is requested.

What limits should I know before using Compress Image?

Stronger lossy compression can introduce blur, ringing, or block artifacts. Already-small images may not shrink and lossless PNG can remain larger than JPG or WEBP.

How can I reduce size without excessive quality loss?

Start with a moderate quality setting and keep the original dimensions. Lower quality or dimensions gradually while comparing the preview.

Related tools

Why NoLogPDF

Built for sensitive files that should stay on your device

NoLogPDF is designed around browser-only processing. The tools load in your browser, run on your computer, and give you honest limits when a format needs server-grade conversion.

No uploads PDFs, images, text, HTML, spreadsheets, and signatures are processed locally.
No signup Open the tool, choose your file, process it, and download the result.
Useful limits Browser-only tools tell you when exact conversion is limited instead of pretending.
Daily workflow Organize, convert, secure, inspect, and clean up files from one simple dashboard.

Local-first privacy

Your data never leaves your device

NoLogPDF is built around privacy principles used by serious teams: minimize data movement, avoid unnecessary collection, and make processing limits visible.

GDPR

Privacy by design

Files are processed locally, so personal documents are not sent to our servers for conversion.

CCPA

No file profiling

NoLogPDF does not need account profiles, uploaded files, or file-processing histories to run tools.

HIPAA

Sensitive-file aware

Useful for private workflows, but not a substitute for your organization's legal compliance process.

Example use cases

Practical browser-only workflows

Freelance workflow

Merge contracts and create smaller client-report copies without sending the documents to a conversion service.

Student reports

Organize assignment pages and use the visible browser-only limits to choose an appropriate conversion workflow.

Office cleanup

Delete pages, reorder a packet, add a visual signature or watermark, and review common document metadata.

Privacy-first use

Work with sensitive local files without an account, file-upload queue, or backend conversion server.

Image and PDF mix

Convert image formats, adjust dimensions, and create PDFs from images in the same local workspace.

Honest conversion

Review clear limits when Office conversion, OCR, aggressive compression, or page rendering cannot be exact.

Docs

How NoLogPDF works

1. Choose a tool

Pick a PDF, image, or document utility from the dashboard or quick menu.

2. Process locally

The browser loads the needed JavaScript libraries and processes your selected file on this device.

3. Download output

The result is generated in-browser and downloaded directly. No backend upload is required.

Quick answers

Frequently Asked Questions

Is NoLogPDF really free?

Yes. The tools run in your browser and do not require an account or payment gate.

Are my files uploaded?

No. The tools run inside the browser with local JavaScript libraries. There is no conversion API behind the page.

Why are some tools marked Beta?

Some PDF jobs need browser rendering or experimental file parsing. Those tools still work locally, but exact layout can vary.

Can NoLogPDF replace every server PDF converter?

Not for perfect Word/PPT reconstruction or heavy compression. The site favors privacy and transparency over fake perfect results.

Do you use cookies or analytics to track me?

Google Analytics collects basic page-view and site-usage information. NoLogPDF never sends file names, file contents, form inputs, passwords, signatures, or conversion data to Analytics. Your theme preference is saved locally in your browser.

How does the helper answer questions?

The helper answers common questions locally. For a genuinely unmatched question, it can send only the text you typed to protected online support. Files, filenames, document contents, passwords, and conversion results are never included.

How do I get help?

Use the support email in the footer: nologpdf@gmail.com.