About FileFlow

Private Browser Tools for Images, PDFs and Developer Data

FileFlow began as a Base64 image converter and has grown into a practical browser toolbox for identifying, converting, formatting and inspecting common web and document formats.

Detect an unknown format Browse all tools

What FileFlow does

One workflow from unknown data to a usable file

You can start with an unfamiliar Base64 string, Data URI, byte array, PDF, image or structured text. AI Format Detector identifies likely formats and recommends the next converter, formatter or analyser.

Conversion engines are loaded only when a tool needs them. This keeps ordinary pages lightweight while allowing specialised PDF, image and binary workflows to run directly in modern browsers.

AI Format Detector

Identify unknown pasted data using syntax, MIME metadata, Base64 decoding and file-signature checks.

  • Base64 and Data URIs
  • Byte arrays and hexadecimal bytes
  • Images, PDF, Office, JSON, JWT and XML
Open detector

Base64 and byte tools

Move between encoded text, binary bytes, images and PDF data without server uploads.

  • Base64 to Image and Image to Base64
  • Bytes to Image and Image Decoder
  • Base64 Analyzer and Base64 to PDF
Open Base64 tools

Image tools

Decode, optimise and convert common browser image formats for websites, documents and favicons.

  • PNG, JPG/JPEG, WebP and SVG workflows
  • Image optimisation and format conversion
  • ICO and favicon generation
Browse Image Tools

PDF and document tools

Create, reorganise, convert and edit PDFs with interaction-loaded browser engines.

  • Image to PDF and PDF to image
  • Merge, split, reorder, rotate and extract
  • Word, Excel and PowerPoint conversion
Browse PDF Tools

Text and developer tools

Format and inspect structured data commonly used in websites, APIs and development workflows.

  • JSON formatter, validator and minifier
  • JWT decoder and viewer
  • XML, HTML and URL utilities
Browse Text Tools

Product principles

Built for clear, local and focused workflows

Private by default Supported conversions run locally so ordinary inputs do not need to leave your device.
Focused tools Each route explains its accepted formats, output and likely failure conditions.
Fast initial pages Large PDF, image and archive libraries are loaded only when a related workflow needs them.
Developer friendly Raw Base64, Data URLs, Buffer output, Uint8Array, hexadecimal bytes, JSON and API data are first-class inputs.
Readable errors Validation separates unsupported input, damaged data and browser limitations instead of showing generic failure states.
Connected workflow Related-tool links help continue from detection to conversion, inspection, formatting or download.

Practical limits

Browser tools complement—not replace—specialised desktop software

Browser processing is ideal for fast everyday conversions, development tasks and privacy-conscious work. Very large files, encrypted PDFs, complex office layouts, proprietary codecs and damaged containers can exceed browser memory or library support.

Each converter states its supported inputs and validation rules. When the format is unclear, use AI Format Detector or Base64 Analyzer before choosing a conversion route.

Find the right FileFlow tool

Browse by category or paste unknown data into the detector.

PDF Tools Image Tools Text Tools FAQ