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View a RDA file online, free

Open and read .RDA files online. View source, logs and text with syntax highlighting, search and line numbers, free.

Drop your .RDA file here

Opens your .RDA file right here.

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Up to 50 MB · 160+ text and code extensions
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What you get for a .RDA file

We don't have a dedicated viewer for this format, so we identify and inspect it instead — honestly, only what can be read from the file.

01

Drop your .RDA file

Choose it or drag it in. It's read right here in your browser.

02

We identify it

We read the magic bytes to tell what the file really is, its MIME type, and whether the name matches the contents.

03

See the details

Any metadata we can extract (dimensions, EXIF/GPS, document author and dates), a hex view, plus readable text and strings found inside.

What is a .RDA file?

Plain text that programs, servers and people write every day.

An RDA file is a data file created by The R Project for Statistical Computing. It contains data structures and variables saved for use within the R environment. These files are typically opened and managed using RStudio.

Programs that open .RDA files

Windows
R (base), RStudio (Posit)
macOS
R (base), RStudio (Posit)
Linux
R (base), RStudio (Posit)
.RDA format details
Full nameR Data File
DeveloperThe R Project for Statistical Computing
First released2001 (R serialization format version 2, introduced in R 1.4.0, December 2001)
CategoryText & Code
MIME typeapplication/octet-stream
Signature52 44 58 0A RDX\n

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Every viewer is free to use.

Frequently asked questions

Is my .RDA 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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