Free Online Data Tools for Inspecting, Analyzing, Converting & Cleaning

QR Code Scanner

Scan QR codes from an image or camera in your browser and review decoded text or links before opening them.

Markdown Viewer

Open Markdown files, edit Markdown text, and preview headings, lists, links, and code locally in your browser.

MongoDB ObjectId Generator

Generate MongoDB-style 24-character hexadecimal ObjectIds individually or in batches of up to 500. Copy results or export to CSV and Excel in your browser.

Snowflake ID Generator

Generate 64-bit Snowflake-style IDs individually or in batches of up to 500. Configure worker and datacenter IDs, then copy or export results to CSV or Excel in your browser.

ULID Generator

Generate sortable ULIDs individually or in batches of up to 500. Copy results or export timestamp-based identifiers to CSV and Excel locally in your browser.

PX to REM

Convert CSS pixel values to rem units and rem values back to pixels with a configurable root font size. Convert multiple values and copy CSS-ready results locally in your browser.

DOM to PDF

Renders HTML markup into pixel-accurate, paginated PDF documents using html2canvas rasterization and jsPDF composition — with configurable page sizes, orientations, scaling, and margin controls.

Base64 to PDF

Decodes Base64 encoded strings and Data URIs into downloadable PDF documents with instant in-browser preview, integrity checks, and local binary reconstruction.

PDF to Base64

Encodes binary PDF files into RFC 4648 standard Base64, URL-safe Base64, or Data URI strings for embedding in JSON APIs, XML payloads, email MIME bodies, and HTML data attributes.

Explore our file format converters and find the right tool for any conversion. Turn Excel spreadsheets into PDFs, transform XML into DOM structures, and more. With a wide range of converters available, you can easily switch between the formats you need. Fast, accurate, and simple to use.

Explore complex nested data structures with interactive tree viewers, raw decoders, JSON/XML/YAML path finders, multi-sheet spreadsheet tab inspectors, and depth metrics locally in your browser.

Run detailed dataset statistical analysis, numerical summary metrics (mean, median, min, max, sum), missing value ratios, data type distributions, column profiling, and web server log error audits.

Validate JSON, XML, CSV, and YAML syntax accuracy, detect exact line & column error pointers, verify JSON Schemas (Draft-04, Draft-07, 2020-12), and enforce data structural integrity.

Perform side-by-side and inline structural diffing for Text, JSON, CSV, XML, and Excel files with key path tracing, added/deleted row detection, cell value modification highlights, and report exports.

Deduplicate Excel workbooks and CSV files, normalize whitespace, standardize casing, filter unwanted records, and sanitize raw datasets locally in your browser with zero data uploads.

Generate useful identifiers, random values, passwords, tokens, hashes, keys, and other browser-based values directly in your browser.

Transform JSON, CSV, XML, Excel, and YAML datasets into interactive visual node trees, multi-sheet dashboards, searchable spreadsheet tables, and high-resolution chart graphics (Bar, Line, Pie, Doughnut).