Data Pad

Free · Runs in your browser · No sign-up

Data Pad

A workbench for the data that moves between systems: healthcare messages, EDI, spreadsheets and API payloads.

Open a file and see it the way it is meant to be read — segments and fields named, errors explained, broken files repaired in one click. Edit it as text or as a tree, a form or a table, then format it, convert it or save it. And when you need data to test with, generate it from your own schema.

Explore the toolsGenerate test data

  • Private by design

    Files are opened, checked and saved in your browser. Nothing is uploaded, and there is nothing to sign up for.

  • Finds and fixes problems

    Errors are explained in plain words, each one a click away from its place in the file — and Repair fixes broken JSON and XML in one go.

  • The view that suits the data

    Read it as text with highlighting, or edit it as a tree, a form or a table. Every view is the same document, with one undo history.

General

Everyday formats — tables, API payloads, configuration and PDF documents — and synthetic data to test with.

CSV Editor

Edit CSV and Excel sheets in a fast grid, then save in the format you need.

  • CSV and Excel (.xlsx) workbooks, one sheet per file
  • Find and replace, remove duplicates, transpose
  • Row form for wide tables
  • Save as CSV, Excel, JSON, Markdown or SQL
CSVTSVXLSX
Open CSV Editor

JSON Editor

Edit JSON as source or as a tree, repair broken files, format and convert.

  • Repairs missing commas, quotes and brackets
  • Format with options, or minify
  • Tree view with forms and editable tables
  • Convert to YAML, CSV, XML, TypeScript, JSON Schema
JSONJSONLGeoJSON
Open JSON Editor

XML Editor

Edit XML as source or as a tree, repair broken markup, format and minify.

  • Repairs unclosed tags, quotes and entities
  • Format with options, or minify
  • XPath of the cursor, one click to copy
  • Tree view with attribute forms and record tables
XMLXSDSVGconfig
Open XML Editor

PDF Editor

Split, merge and rearrange PDF files, change their text, and add shapes, QR codes or a watermark, without uploading them.

  • Split every few pages, at chosen pages, at bookmarks, or with scissors between pages
  • Merge PDFs and pictures; drag pages into order, rotate, copy, delete
  • Click the words on a page to change them; add text, pictures, shapes and arrows
  • QR codes and barcodes (Code 128, EAN-13), page numbers and a watermark
PDFPNGJPEG
Open PDF Editor

Data Generator

Generate realistic test data from a schema, a SQL script or metadata.

  • Start from SQL DDL or a metadata file
  • A generator per column, with foreign keys kept
  • JSON, XML and CSV output
  • SQL for SQL Server, PostgreSQL and SQLite
SQLJSONXMLCSV
Open Data Generator

Healthcare

HL7 v2 messages, X12 EDI claims and remittances, DICOM medical images and Noah audiograms. Patient data never leaves your computer, and these pages show no ads.

HL7 Editor

Read, validate and edit HL7 v2 messages field by field.

  • Segment tree with field names and data types
  • Validation against the HL7 v2 specification
  • Send over MLLP or HTTP
  • Export to JSON and v2.xml
HL7ER7
Open HL7 Editor

X12 Editor

Inspect and fix X12 EDI interchanges with element names decoded.

  • Element names and code values decoded
  • Validation with implementation guide rules
  • Recomputes control numbers and counts
  • Export to JSON and XML
X12EDI
Open X12 Editor

DICOM Viewer

View DICOM images and tags, and de-identify studies, without uploading them.

  • Series browser and a tag browser with plain-words values
  • Window/level presets, zoom, pan, measurements and cine
  • JPEG, JPEG 2000, JPEG-LS and RLE compressed images
  • De-identify with the PS3.15 Basic Profile, export DICOM JSON
DCMDICOM
Open DICOM Viewer

NHAX Viewer

View and edit the audiograms in Noah NHAX files, without uploading them.

  • Patient browser, sessions and actions, as in Noah
  • Audiograms with standard symbols, masking and no-response marks
  • Edit points on the chart or in a table, and patient details
  • Reads HIMSA formats 200, 500 and 502; saves NHAX, XML and CSV
NHAX
Open NHAX Viewer

Images

Photos and graphics: what a picture says about itself — camera, date, place, caption — read, changed or removed, and data hidden in its pixels. Pictures are never uploaded.

Exif Editor

See, edit or remove the Exif, XMP and IPTC data of photos, without uploading them.

  • Title, caption, keywords, copyright, date and GPS in one form
  • Every Exif, XMP and IPTC tag in a searchable table
  • Remove the location, or all metadata, from many pictures at once
  • JPEG, PNG, WebP, TIFF, HEIC, AVIF, JPEG XL and GIF, with no quality loss
JPEGPNGWebPTIFFHEICAVIFJXLGIF
Open Exif Editor

Steganography

Hide a text or a file inside a picture, or read one out, without uploading anything.

  • Hide text or any file in a picture’s pixels
  • Optional password: AES-256 encryption
  • Shows how much a picture can hold, and how visible it is
  • Reveal and save what a picture holds
PNGJPEGWebPAVIF
Open Steganography