Online file editor

Edit text files, code, and documents directly in your browser with this powerful online file editor.

Request Feature / Support

13,612+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

The Online File Editor is a comprehensive web-based tool that allows you to edit various text file formats directly in your browser without installing any software. Upload files or start from scratch with a clean text editor that supports syntax highlighting for programming languages. Edit HTML, CSS, JavaScript, JSON, XML, CSV, Markdown, and plain text files with ease. The editor includes line numbers, find/replace functionality, and the ability to download edited files in their original format. All processing happens securely in your browser or on our servers for format conversions.

Save your calculation history with a free account

How to Use

Upload a file using the file upload area or drag and drop a file onto the editor.
Edit the file content directly in the text editor with syntax highlighting support.
Use the find/replace feature to quickly modify text.
Click 'Save Changes' to process your edits and download the updated file.
For format conversions, select the target format and click 'Convert & Download'.

Frequently Asked Questions

Find Quick Answers

What file formats does the online file editor support?

The editor supports TXT, HTML, CSS, JS, JSON, XML, CSV, and Markdown files. You can edit these formats directly and download them in their original format or convert between supported formats.

Is my file content secure when using this editor?

For basic text editing, all processing happens directly in your browser - your files never leave your computer. For format conversions that require server processing, files are temporarily processed on our secure servers and immediately deleted after conversion.

Can I edit large files with this online editor?

The editor can handle files up to 10MB in size. For optimal performance with very large files, we recommend using dedicated desktop editing software.

Does the editor support syntax highlighting?

Yes, the editor automatically detects file types and applies appropriate syntax highlighting for programming languages including HTML, CSS, JavaScript, JSON, XML, and Markdown.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Spotify to MP3 Converter

Convert Spotify tracks and playlists to MP3 format instantly with our free online converter.

Road Distance Calculator

Calculate the driving distance and travel time between two addresses with our free online road dista...

Age Calculator

Calculate your exact age in years, months, and days from any birth date to any target date.

Currency Converter

Convert currencies instantly with real-time exchange rates and historical data support.

Your Feedback Matters

Help Us to Improve