How to open a code or text file online
Three steps, a few seconds, no software.
Open your .SCRATCH file
Drop it on the box, choose it from your device, or paste the text straight in.
View it instantly
Your .SCRATCH file opens neatly formatted with line numbers.
Search, copy or download
Search the text, jump to any line, then copy what you need or download a clean copy.
What is a .SCRATCH file?
Plain text that programs, servers and people write every day.
A file labeled .scratch almost certainly comes from an unrelated app's temp buffer, not MIT Scratch. Real Scratch projects use .sb3 (Scratch 3.0), .sb2 (2.0), or .sb (1.x). Open any of them free at scratch.mit.edu (File > Load from your computer) or in the offline Scratch Desktop app; no account needed.
Programs that open .SCRATCH files
| Full name | Scratch project file |
|---|---|
| Developer | MIT (Scratch Foundation / MIT Media Lab Lifelong Kindergarten group) |
| First released | Scratch 1.0 (2007); current Scratch 3.0 from 2019 |
| Category | Text & Code |
| MIME type | application/x.scratch.sb3 |
| Signature | 50 4B 03 04 "PK" - ZIP local file header (for current .sb2/.sb3 projects) |
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Frequently asked questions
Is my .SCRATCH file uploaded anywhere?
No. The file is read and highlighted for you.
Why do some characters look wrong (é, ł)?
That usually means the file was saved in one encoding and opened in another. We detect UTF-8, UTF-16 and the Windows-1250/1252 code pages automatically and show which one was used.
Can it handle huge log files?
Yes, up to 50 MB. Only the lines on screen are drawn, so scrolling stays smooth. Syntax colours are switched off for files over 1.5 MB to keep things fast.
How do the log level filters work?
We find levels like ERROR, WARN, INFO and DEBUG on each line. Lines without a level, such as stack traces, stay with the entry above them, so filtering to errors keeps the full trace.
Can I edit the file?
This is a viewer. To change code, download it or copy it into your editor. Converting encodings and line endings is planned.
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