Format JSON for API debugging
Use this workflow when an API response is hard to read, a JSON payload fails validation, or a frontend error points to malformed structured data.
Open guideWorkflow Guides
Solve common developer file and data tasks faster
Pick a focused workflow, inspect the example, then open the matching browser tool. These guides cover API payload debugging, authentication tokens, HTTP response headers, spreadsheet exports, URL encoding, file encoding checks, QR links, checksums, UUIDs, and text cleanup.
Decode a JWT safely before debugging authentication
Use this workflow when a login, API request, or permission check fails and you need to inspect token claims before changing auth code.
Open guideBase64 decode an API payload
Use this workflow when an API response, webhook, cookie, or configuration value contains Base64 text that needs to be inspected before debugging.
Open guideConvert CSV to JSON for spreadsheet data cleanup
Use this workflow when a spreadsheet export needs to become API-ready JSON, a fixture, or a structured dataset for debugging.
Open guideFix CSV and JSON conversion errors
Use this workflow when a spreadsheet export, API fixture, or CSV/JSON handoff fails because columns shift, headers disappear, characters look broken, or JSON will not parse.
Open guideMerge PDF files privately in the browser
Use this workflow when invoices, forms, reports, or scanned pages need to be combined without sending files through an account-based document service.
Open guideSplit a PDF without uploading it to a server
Use this workflow when only part of a PDF needs to be sent, archived, printed, or attached, and the source document should stay on your device.
Open guideConvert phone photos into one PDF in the browser
Use this workflow when several phone photos need to become a single PDF for reimbursement, records, school forms, support tickets, or document submission.
Open guideAdd a watermark to a PDF before sharing it
Use this workflow when a PDF needs a Draft, Confidential, Internal Use, or reviewer note before it is sent outside a team or uploaded to a portal.
Open guideTurn PDF pages into images for reports
Use this workflow when a PDF page needs to appear as an image in a report, presentation, support ticket, preview, or documentation screenshot.
Open guideVerify a file checksum with SHA-256
Use this workflow when a vendor, GitHub release, or teammate gives you a checksum and you need to confirm that the file you downloaded has not changed.
Open guideInspect HTTP response headers before debugging APIs
Use this workflow when a browser request, API response, redirect, or CDN cache behaves differently than expected and you need a clean header-level view first.
Open guide