Every tool is free, unlimited and works without uploading a single file. Why we built it this way →
Image Compressor

Compress PNG

Compress images free with no upload limit or credit system. Set a quality level or an exact KB target — the engine finds the smallest file that still looks sharp. Up to 30 files per batch.

  • Free forever
  • No upload
  • Bulk 30 files
  • No watermark

Last updated · Built and reviewed by the FreeConverterTools editorial team · Tested in Chrome, Edge, Firefox and Safari.

Quick answer

Add your images, choose an exact size target (like 100KB) or slide the quality control, then press Convert All. The engine re-encodes each file repeatedly until it meets your target at the highest quality still possible — locally, in seconds, free and unlimited.

Compress PNG — Compress PNG images online to reduce file size while keeping quality. Bulk up to 30 files, 100% free, no upload Because everything is computed on your own machine, large batches finish in seconds and there is no upload step to wait for or privacy policy to squint at.

Why Choose a No-Upload First PNG Compressor?

Because PNG should happen on your own machine, not on somebody else’s server. FreeConverterTools.net’s PNG compressor is a real program that runs inside your browser tab — it re-measures quality until the file hits your exact target using modern web codecs (Canvas, WebCodecs, WASM decoders). There is no upload endpoint, no queue, no credit meter and no watermark, because nothing has to travel anywhere before it can be processed. The same code that ships to you is what your “private browsing” window already trusts with your bank login.

  • Privacy is architectural, not a promise. Your PNG never reaches our server — there is no server step to distrust, no clause to read and no retention policy to worry about.
  • Faster than upload sites. A typical 5 MB file finishes in well under a second because we skip the round-trip to a cloud queue. No 200 MB caps, no overnight jobs.
  • Bulk by default. Drop up to 30 files, set the options once, download one ZIP — unlimited batches, no account.
  • Quality is your dial, not our guess. Native resolution is preserved by default; sliders and pixel caps are exposed so you decide the trade-off.
  • Works on every OS and browser. Chrome, Edge, Firefox, Safari; Windows, macOS, Linux, Android and iPhone (including direct HEIC import from the Photos app).
  • Genuinely free, forever. No "3 of 5 files free", no watermark upsell, no dark pattern behind the download button.

How to compress png online

1
Add your images

Click the upload area or drag files straight onto the page — up to 30 at once. Pasting from the clipboard (Ctrl+V / Cmd+V) works too, and nothing is uploaded at any point.

2
Set your options

Choose an exact KB target (the engine binary-searches quality for you) or set a manual quality level you trust.

3
Press "Compress All"

Files are processed in a queue directly on your device. Progress shows per file with the before-and-after size.

4
Download the results

Grab individual images with the Download button on each row, or use "Download All (ZIP)" for the entire batch.

Who uses this tool

  • Bloggers and store owners fixing oversized images before they hurt page speed — the compressor collection pairs well with this tool.
  • Designers prepping assets that must respect transparency, exact dimensions or print colour.
  • Students and job-seekers hitting strict portal requirements (size caps, passport specs, file types).
  • Anyone privacy-conscious — the whole image compressor set works without uploading a single byte.

Why use FreeConverterTools.net instead of the usual converter sites?

  • Nothing is uploaded. Conversion runs on your machine. That also means no 200MB file caps and no overnight cloud queues.
  • Free without an asterisk. No credits, no "3 of 5 files free", no watermark unless you add one yourself.
  • Bulk by default. Up to 30 files per batch, one ZIP download.
  • Quality is yours to set. Keep native resolution, cap maximum pixels, or dial the compression quality yourself — the defaults keep every pixel.
  • Works everywhere. Chrome, Edge, Firefox, Safari; Windows, macOS, Linux, Android, iPhone.
  • Private by architecture, not by promise. There is simply no upload endpoint to distrust.

Frequently asked questions

How do I compress an image to an exact file size?
Pick one of the KB presets (30KB, 100KB, 500KB…) on this page, add your files and hit Convert All. The tool binary-searches the quality setting and, only if it must, gently reduces pixel dimensions — you get the highest-possible-quality image inside your limit.
Is free bulk compression really unlimited here?
Yes. Batches go up to 30 files, and you can run as many batches as you like. There is no credit meter, no account, no queue and no watermark.
Will compression ruin my photos?
You control the trade-off. Quality-mode lets you choose the exact setting (90% looks identical to 100% on most photos, at roughly half the bytes). Target-size mode guarantees the limit instead, and the notes under each result tell you what was done.
Which format should I compress into?
For websites, WebP is the safe modern choice; AVIF is smaller still if your stack supports it. For email and documents, keep JPEG. Our PNG-to-WebP and JPG-to-WebP converters double as compressors using the very same sliders.
Can I compress 30 images at once?
Yes — that is the point of the bulk queue. Drop them all in, set one rule, download one ZIP.
Do compressed images stay on my device?
Every byte stays local. The compressor never uploads, so it is as private as compression gets.
What happens to my files after I close the tab?
Nothing, because they were never sent anywhere. All work happens in browser memory, which is discarded the moment you close or reload the page.

People also convert & edit

Compress JPGsame categoryCompress WebPsame categoryCompress GIFsame categoryCompress BMPsame categoryCompress TIFFsame categoryCompress HEICsame categoryCompress AVIFsame categoryCompress Image to 30KBsame category

Prefer to browse? The complete directory of all 220 tools and the image format guide cover every conversion, editor and privacy tool on the site.