Base64 to PDF
Decode Base64 text back into a PDF.
Turn Base64 text — pasted from code, an API response or a .txt file — back into a real PDF file. A data URL prefix such as data:application/pdf;base64,... is accepted automatically, and the output is validated to start with the %PDF- magic before it is offered for download.
Your files are processed locally in your browser. Nothing is uploaded to a server, ever.
Tip
Drop your file here or click to browse. Everything is processed on this device — nothing is uploaded.
Quick answers
- What does this tool do?
- Decode Base64 text back into a PDF. Turn Base64 text — pasted from code, an API response or a .txt file — back into a real PDF file. A data URL prefix such as data:application/pdf;base64,...
- Is it free?
- Yes — free and unlimited, with no account required and no watermark on the result.
- What files are supported?
- TXT files, up to 20 MB each.
- Where is my file processed?
- Entirely in your browser. Your file never leaves your device — nothing is uploaded to a server.
- What are the limitations?
- Only Base64 that decodes to a real PDF is accepted. Whitespace is ignored, but other invalid characters will fail decoding.
- What happens if processing fails?
- You get a clear message explaining what went wrong and how to fix it (try another file, check the format, or start over). Your original file is never touched.
How to Base64 to PDF
- Paste Base64 text, or upload a .txt file containing it.
- Process to decode.
- Download the PDF.
Frequently asked questions
Common problems and fixes
- The output has empty or missing text
Why: the source pages were a scan or an image — there is no text layer to convert.
Fix: run the OCR PDF tool on the file first to add a searchable text layer, then convert again.
- Tables and columns come out jumbled
Why: a PDF stores positions on a page, not rows and cells, so designed layouts are reconstructed approximately.
Fix: for data you need in a spreadsheet, use the Extract Tables tool instead — it is built for that job.
- Fonts look slightly different in the converted file
Why: a PDF embeds glyph shapes rather than font families, so the closest available font is substituted.
Fix: expect near-identical text flow rather than pixel-perfect type; fix fonts in the target app if exactness matters.
Who uses Base64 to PDF?
- Students and researchers — turning readings, papers and handouts into editable notes they can annotate and quote from.
- Office teams — reusing content from reports and statements without retyping it by hand.
- Anyone handling confidential documents — the conversion runs in your browser, so contracts and financial files never leave your device.