How to Blur Faces in Photos

Blur faces locally in your browser with ConvertCraft. 100% private, zero uploads, and WebAssembly-powered. No account required for free online redaction.

Why Use the ConvertCraft Face Blur?

  • Unmatched Data Privacy: ConvertCraft Face Blur utilizes advanced WebAssembly technology to process your images entirely within your browser's isolated sandbox. Because no data is ever uploaded to a server, your sensitive photos remain exclusively on your local device, ensuring complete data sovereignty and zero tracking. This browser-based WebAssembly processing guarantees that your files never leave your machine, making it the safest way to redact images without uploading them to a third-party cloud.
  • Instant Performance: By leveraging the power of your own hardware, Face Blur eliminates the latency associated with cloud-based tools. There are no queues, no file transfer delays, and no server-side bottlenecks, allowing for near-instantaneous redaction regardless of your internet connection speed. Experience the speed of 100% local (WASM) processing that works even when you are offline.
  • Pro-Level Capacity: While our free tier offers robust performance for casual users, upgrading to Pro unlocks massive efficiency. You can process up to 400 files in a single batch, making it the ideal solution for bulk anonymization of large datasets without ever leaving your local environment. Our free tier allows for a convenient batch of 5 files, perfect for quick, private edits.
  • Professional-Grade Redaction: Designed for compliance with privacy standards, Face Blur provides a secure way to anonymize individuals in public photos, healthcare documentation, or journalistic content. By using our free online face blur tool, you ensure that personally identifiable information is permanently obscured using high-quality Gaussian or pixelated filters.

How to Use the ConvertCraft Face Blur

Step 1

Open the Face Blur at ConvertCraft by visiting <https://www. convert-craft. com/tool/image-face-blur/> to begin your redaction process.

Simply drag and drop your image file directly into the interface. ConvertCraft Face Blur natively supports JPG, JPEG, PNG, and WEBP formats, ensuring broad compatibility with your existing digital library. Because this is a browser-based tool, you do not need to worry about file size limits during the initial selection phase, as all processing happens locally in your browser.

Step 2

Once the image is loaded, the browser-based engine immediately scans for human faces using local WebAssembly. You can utilize the automated detection features or switch to the manual selection tool to obscure additional sensitive details like license plates or addresses. Face Blur allows you to toggle between a classic Gaussian blur for a soft, professional finish or a pixelated mosaic for high-contrast, technical redaction.

Step 3

After finalizing your edits, click the download button to save your processed image. Because Face Blur operates entirely client-side, the new file is generated instantly and saved directly to your local storage. Your original file remains untouched, and no trace of the image is ever stored on a ConvertCraft server, providing a truly private file converter experience.

Tips for Best Results

  • Metadata Management: While Face Blur focuses on visual redaction, remember that EXIF data can contain location coordinates. ConvertCraft tools are designed to handle metadata according to your needs, but always verify your output if sharing sensitive files. We recommend checking your image properties after processing to ensure complete anonymity.
  • Precision Redaction: Use the manual selection mode in Face Blur to ensure that no identifying features are visible at the edges of your blurred zones. Because the processing is local and permanent, you can be confident that the redaction cannot be reversed by standard image viewers, providing a secure workflow for sensitive documents.

Comparison: Free vs Pro

FeatureConvertCraft (Free)Pro TierTraditional Tools
Data Privacy100% Local (WASM)100% Local (WASM)Server-side upload
Batch Limit5 files400 filesStrict limits
File Size25MB (Free)2GB per fileFixed caps
CostFreeFrom $9/monthSubscription required


Frequently Asked Questions

Q: Is my data safe when using ConvertCraft?

Yes. ConvertCraft uses 100% local (WASM) processing. No files are ever uploaded, tracked, or stored on a server.

Everything happens locally in your browser.

Q: How many files can I process for free?

The free tier allows you to process up to 5 files per batch. For larger projects, our Pro tier supports up to 400 files per batch.

Q: Does this tool require an internet connection?

Once the page is loaded, the browser-based WebAssembly engine works entirely offline, ensuring zero upload and maximum privacy.

Q: Which image formats are supported?

You can use JPG, JPEG, PNG, and WEBP files. The tool outputs these same formats, maintaining high quality throughout the process.

Q: Do I need to create an account to use the Face Blur tool?

No account is required. ConvertCraft is a free online tool designed for instant, private use without any sign-up or tracking scripts.