The Professional
Online Hex Editor

Analyze, edit, and debug binary files directly in your web browser. No installation. No file uploads. 100% Secure.

Open Editor Now How it Works

Why use HexEditor.online?

We combine the power of desktop tools with the convenience of the web.

⚡

Instant Performance

Powered by advanced JavaScript TypedArrays and virtual scrolling, we handle large files (1GB+) seamlessly without lagging your browser.

🔒

Private & Secure

Your privacy is our priority. Files are processed locally in your RAM using the HTML5 File API. We never see your data.

🛠️

Advanced Toolset

Includes Checksum calculation (CRC32, MD5), Histogram analysis, File Comparison, and multi-format data inspection (Int, Float, ASCII).

How to Edit Binary Files Online

Editing binary files doesn't require complex software anymore. Follow these simple steps to start hex editing:

  1. Open the Editor: Click the "Launch Editor" button to enter the workspace.
  2. Load your File: Drag and drop your file (e.g., .bin, .dat, .exe) onto the grid or use the file picker.
  3. Inspect & Edit: Use the Hex view on the left or ASCII view on the right to modify data.
  4. Save Locally: Once finished, click "Save" to download the modified binary back to your device.
00000000 48 65 78 45 64 69 74 6F HexEdito
00000008 72 2E 6F 6E 6C 69 6E 65 r.online
00000010 52 75 6E 73 20 4C 6F 63 Runs Loc
00000018 61 6C 6C 79 21 00 00 00 ally!...

Supported Formats & Use Cases

HexEditor.online is versatile enough for professionals and hobbyists alike.

Reverse Engineering Game Save Editing Malware Analysis Data Recovery Firmware Modding Protocol Analysis

Data Types

  • 8-bit, 16-bit, 32-bit Integers (Signed/Unsigned)
  • Float32 & Float64 (IEEE 754)
  • ASCII & UTF-8 Encoding
  • Binary (Bit-level view)

Compatibility

  • Google Chrome, Edge, Brave
  • Mozilla Firefox
  • Safari (macOS & iOS)
  • Android Mobile Browsers

Frequently Asked Questions

Is this online hex editor safe?

Yes, absolutely. HexEditor.online works entirely client-side. Your files are loaded into your browser's memory and are never uploaded to any remote server. It is as safe as using offline software.

Can I edit large files?

Yes. We use memory-efficient virtual rendering techniques. You can open files as large as your available system RAM permits (often several gigabytes).

Is it free?

Yes, HexEditor.online is a completely free tool for the community. There are no hidden fees, subscriptions, or download walls.

How do I calculate a checksum?

Open your file, click the "Tools" button in the toolbar, and the application will automatically calculate CRC32 and MD5 hashes for your data.