Converter Tools
Encode and decode Base64, escape URLs, switch between data formats, all in your browser. Files dropped on these pages are read locally via FileReader and never leave your tab.
Encoders, timestamps and image tools
Six tools live today: an Image Compressor (Canvas, no upload), a Unix Timestamp Converter, Base64 (text and files), URL Encoder (query-string + path), Markdown to HTML and a CSV Viewer that exports JSON or TSV. Format, base and encoding matrices are on the roadmap below.
Compress a photo with the Image Compressor, decode epoch time in the Timestamp Converter, turn a table into JSON with the CSV Viewer, or jump to Base64.
Image Compressor
Compress JPEG, PNG and WebP with a quality slider. Batch, before/after preview, zero upload.
Unix Timestamp Converter
Convert epoch ↔ date, seconds or milliseconds, ISO 8601, UTC and any timezone. Batch convert.
Markdown to HTML
Convert Markdown (GFM) to clean HTML. Live preview, optional Tailwind classes, nothing uploaded.
CSV Viewer & Formatter
Open CSV as a sortable table, auto-detect the delimiter, export to JSON or TSV.
URL Encoder / Decoder
Encode or decode URLs and query strings. Handles Unicode and percent-encoding correctly.
Base64 Encoder / Decoder
Encode or decode Base64 strings instantly. Drag and drop files: everything stays local.
Frequently Asked Questions
What's the difference between Base64 and URL encoding?
Base64 encodes binary data as ASCII (using 64 characters), often to carry data in a text-only context like an email or a JSON payload. URL encoding (percent-encoding) escapes reserved characters inside a URL so they're not interpreted as separators. Different problems, different tools.
Can I convert binary files (images, PDFs) to Base64?
Yes, the Base64 encoder accepts files via drag and drop. The file is read with FileReader in your browser; nothing is uploaded.
Are there size limits on conversions?
Limited by browser RAM, not by us. A 50 MB file converted to Base64 stays manageable on a modern device; beyond that, latency becomes noticeable. No request leaves your tab regardless of size.
Can I batch-convert multiple inputs at once?
No. Each tool handles one payload at a time.