How to open a code or text file online
Three steps, a few seconds, no software.
Open your .FLA file
Drop it on the box, choose it from your device, or paste the text straight in.
View it instantly
Your .FLA 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 .FLA file?
Plain text that programs, servers and people write every day.
An FLA file is the editable source project of an Adobe Animate (formerly Flash) animation, game, or interactive piece. The only program that fully opens it is Adobe Animate (paid, Creative Cloud). To view the result, you need the published .swf file, not the .fla. Flash Player died in 2020, but Animate still opens and edits FLA files.
Programs that open .FLA files
| Full name | Adobe Animate / Flash Project (FLA) |
|---|---|
| Developer | Adobe Systems (originally Macromedia / FutureWave) |
| First released | 1996 (FutureSplash / Macromedia Flash); binary FLA through Flash CS4, ZIP/XML (XFL-based) FLA since Flash CS5 (2010) |
| Category | Text & Code |
| MIME type | application/octet-stream |
| Signature | 50 4B 03 04 "PK" - ZIP header, for modern (CS5+) FLA which is a zipped XFL bundle |
Related viewers
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Frequently asked questions
Is my .FLA 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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