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Threshold Image

Convert an image to high-contrast black and white with a threshold slider.

Quick answer: Threshold Image lets you convert an image to high-contrast black and white with a threshold slider. It runs free in your browser on FileToolsHub — your input is not uploaded.

About Threshold Image

Threshold Image on FileToolsHub is a free online image tool that helps you convert an image to high-contrast black and white with a threshold slider. It is built for developers building favicons and QR codes who need a reliable result without installing software.

Privacy-first: Threshold Image processes data locally in this tab, so tokens, notes, and files stay on your device. How it works: Upload an image. Set the threshold. Download the PNG.

People choose Threshold Image because Browser-only; Stencil-ready; No upload; Private. Output is ready as threshold png so you can paste it into docs, commit it, or attach it to email right away.

Threshold Image sits alongside crop, resize, compress, QR, and filter tools in the Image hub. Follow up with resize-by-percent or exact resize for layout slots. Open https://filetoolshub.com/image or jump from related tools below. Page URL: https://filetoolshub.com/tool/threshold-image.

How to use Threshold Image

Follow the steps below to complete threshold image on FileToolsHub. The interface is designed for a single clear job so you can finish quickly and return to your workflow.

  1. 1

    Upload an image.

  2. 2

    Set the threshold.

  3. 3

    Download the PNG.

Why choose Threshold Image?

Threshold Image is free, works in modern browsers, and is built for everyday conversion and formatting tasks without forcing an account for standard use.

  • Browser-only
  • Stencil-ready
  • No upload
  • Private

Common uses for Threshold Image

  • Complete threshold image online and continue with related image tools
  • Convert PNG/JPG/WEBP for the web
  • Apply grayscale, blur, tint, or pixelate filters
  • Generate a QR code for Wi‑Fi or a link
  • Build a favicon.ico from an SVG or PNG

Tips for better results with Threshold Image

Paste only what you need into Threshold Image. On a shared computer, clear the clipboard afterward if the content was sensitive.

Follow up with resize-by-percent or exact resize for layout slots.

Related tools appear below when available. Browse the full Image Tools category or the site sitemap for every free utility on FileToolsHub.

Category hub: Image Tools.

Threshold Image FAQ

Uploaded?

No.

vs Grayscale?

Threshold forces pure black/white; grayscale keeps midtones.

Is Threshold Image free to use?

Yes. Threshold Image on FileToolsHub is free for everyday use with no account required for standard jobs.

Does Threshold Image work on mobile?

Yes. Threshold Image works in modern mobile and desktop browsers. Large uploads may be slower on limited connections.

What output format does Threshold Image produce?

Threshold Image produces Threshold PNG. Download or copy the result when the preview looks right.

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