Blur Image: free online, fast and secure
Before posting a photo publicly you may need to hide faces of children, car number plates, addresses, phone numbers or document details. This free blur tool lets you select any area and blur it beyond recognition.
You can blur several areas one by one, adjust the strength, undo if needed, or blur the entire image for a soft background effect. Because the photo never leaves your device, it is safe for sensitive pictures.
How to use Blur Image
- Open your photo. Choose the image you want to edit.
- Select an area and apply. Drag the box over a face or detail, set the strength and press “Apply blur”. Repeat for other areas, or choose “Whole image”.
- Download. Save the blurred photo as JPG or PNG.
Why use ConvertKaro Blur Image? Free, fast and secure
Many online tools upload your file to a remote server and make you wait. ConvertKaro is different.
100% Free
Use Blur Image completely free, every day. No credit card, no “pro” version and no daily cap on files.
Fast results
No waiting for uploads to finish. The work happens on your device the moment you add a file, which makes it noticeably faster than server-based tools.
Secure and private
Your files never leave your device. ConvertKaro does not upload, store or look at your documents and photos, which makes it safe for ID cards, bank statements and private pictures.
No signup, no watermark
You do not need to sign up or log in, and your output is clean, without any logo or branding.
Works on every device
Nothing to install: it runs in any modern browser on phones, tablets and computers.
Multiple areas, one undo
Blur as many spots as you like; “Undo all” restores the original instantly.
ConvertKaro vs other online converters
| ConvertKaro | Typical online tool | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your files | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
Common uses for Blur Image
- Hiding vehicle number plates before posting
- Protecting children’s faces on social media
- Covering addresses on parcels and screenshots
- Hiding account numbers on bank screenshots
- Creating soft blurred backgrounds for text
Tips for the best results
- Use high strength (40+) for faces and text so they cannot be read.
- Blur a slightly larger area than the detail to be safe.
- For documents, blurring is safer than a thin black line that can be edited out of a PDF.
- Remove location data as well with Remove EXIF Data.
Good to know
A typical phone photo today is 3000–4000 pixels wide and 2–6 MB in size, far more than WhatsApp, websites or government forms need. Most screens show images at 1000–2000 pixels wide, so reducing size rarely makes a visible difference. Knowing this helps you get better results from Blur Image: choose the right format for the job, keep the original file as a backup, and only make images as large as the place where they will be shown.
| Price | Free, no limits |
|---|---|
| Processing | On your device, no upload |
| Signup | Not required |
| Watermark | None |
| Works on | Android, iPhone, Windows, Mac, Linux |
| Category | Image tools |
How Blur Image keeps your photos and images private
When you add a file to Blur Image, it is opened with your browser’s own engine, processed in memory and offered back to you as a download. ConvertKaro never receives a copy. This is why the tool is fast even on 4G, why there is no daily limit, and why it is safe for confidential photos and images like ID proofs, bank documents, contracts and family photos.
Using Blur Image on your phone
On a phone, open this page in Chrome or Safari, tap the main button and pick files from your gallery, Files app or Google Drive. Results download straight to your phone, usually into the Downloads folder or Files app. You can also add this page to your home screen for one-tap access next time.
Who uses Blur Image?
You do not need any technical knowledge to use it. It is popular with:
- Students uploading photos and signatures to exam and admission forms
- Online sellers preparing product photos for Instagram, Meesho, Amazon and Shopify
- Office staff handling ID cards, scans and screenshots
- Bloggers and web designers who need fast-loading images
- Anyone sharing pictures on WhatsApp, email or social media
Supported input: JPG, JPEG, PNG, WEBP, HEIC/HEIF (iPhone), AVIF, GIF, BMP, TIFF and SVG.
Frequently asked questions
Can blurred text be recovered?
With a strong blur the original detail is destroyed in the saved file, so it cannot be restored from the image.
Can I blur more than one face?
Yes. Move the box to each face and press Apply each time.
Is my photo uploaded?
No. Blurring happens on your device, which is important for private photos.
Is Blur Image really free?
Yes, completely free. You can use it as many times as you want, and every option on the page is included at no cost.
Is it safe to use Blur Image online?
Yes. Your files are processed inside your own browser and are never uploaded to our servers, so nobody else can see them.
Does Blur Image work on mobile?
Yes, the tool is built mobile-first. Open this page on your phone, add your files and download the result directly.
Is there a file size limit in Blur Image?
There is no fixed limit set by us because files are not uploaded. Very large files depend on your device’s memory; most phones handle files of 100 MB or more without problems.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Your downloaded file is exactly your result.
Does Blur Image work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.
Related free tools
Explore more free tools that work the same way, privately in your browser: Remove EXIF Data, Crop Image, Add Watermark to Image, Grayscale Image, Compress Image.