Guides

Each guide includes original examples, test notes, limitations, and a named testing desk attribution.

• developer

  How to convert CSV to JSON without breaking quotes, commas, or line breaks

  A practical guide to CSV quoting, why split-on-comma fails, and how ConvertPass’s local CSV to JSON tool keeps fields intact.

• developer

  How to safely decode a JWT and why decoding is not validation

  Decode a JSON Web Token locally to read claims, and understand why ConvertPass will not verify signatures in a website tool.

• image

  How to remove GPS location data from photos before sharing

  Phone photos often embed GPS in EXIF. Learn how to see it, strip it locally, and verify the cleaned file without uploading the picture.

• image

  How to choose between AVIF, WebP, JPEG, and PNG

  A practical format choice for websites: photographs versus graphics, alpha, encode support, and what ConvertPass can actually emit in this browser.

• image

  How to convert and optimise images for websites

  Resize first, compress second, pick a format third. A local workflow using ConvertPass without a remote image CDN.

• ai-image

  How ComfyUI workflow data is stored in PNG images

  ComfyUI typically writes tEXt chunks named prompt and workflow. This guide describes that layout as observed, not as a promise that every install behaves the same.

• ai-image

  How to extract workflow metadata from a ComfyUI image

  A local sequence: inspect chunks, extract JSON, format it, and load it in ComfyUI. If the chunks are absent, stop — do not invent a graph.

• ai-image

  Why AI-image prompt data may be missing from a PNG

  Prompts disappear because they were never written, because an app stripped chunks, or because the file was re-encoded. Absence is not proof of origin.

• ai-image

  How to remove embedded AI-generation metadata before sharing an image

  Strip PNG text chunks or re-encode, then verify with the AI metadata viewer. Pixel steganography is out of scope.

• video

  How to inspect video codec and container information

  A container is not a codec. Learn what a browser can actually tell you, and why ConvertPass will not invent HEVC labels from a .mp4 extension.

• video

  How to choose video export settings for common online platforms

  Starting points for YouTube, Shorts, TikTok, Reels, and LinkedIn, last reviewed 16 August 2026. Platforms re-encode; these settings are not a bypass.