WhatsApp chat to PDF for court

What a court-ready transcript needs

• Completeness — the full conversation for the period in question, not a curated selection of messages taken out of context. Judges and opposing counsel are wary of transcripts that look cherry-picked.
• Chronological order with real timestamps — every message needs the actual date and time it was sent, not relative labels like “Yesterday” that mean nothing once printed.
• Clear sender identification — it should be obvious who sent each message, ideally using real names rather than just phone numbers.
• Pagination — numbered pages so a reader can tell nothing is missing, and can cite “page 14” in a filing or during testimony.
• An unaltered source — the transcript should be traceable back to the original export file, without hand-edited text.

Building this in practice

1. Export the full chat from WhatsApp — see export on iPhone or export on Android. Export the whole conversation even if only part of it is relevant; you can filter the date range afterward without editing the original file.
2. Keep that raw .txt or .zip untouched and set aside — this is your source of truth if anyone asks to verify the printout later.
3. Upload it to chattoevidence.com and use the date-range filter (Case Pass) to produce a PDF covering just the relevant period, if the full chat is very long or contains unrelated content.
4. Add an exhibit label and let Bates numbering stamp a sequential number on every page, so the document matches how your court or counsel wants exhibits referenced.
5. Review the certification page, which records the SHA-256 fingerprint of the source file — this is what lets the export be verified against the original later without redoing the whole process.

Authenticity and chain of custody, in plain terms

“Authenticity” in this context means being able to show the transcript reflects an actual conversation and hasn't been altered. The practical way to support that is to keep three things: the original phone the conversation happened on, the raw export file you generated from it, and a record (the SHA-256 fingerprint) that ties the PDF back to that exact file. If a court wants to verify the PDF, someone can re-run the fingerprint check on your saved export and confirm it matches — and, if needed, the phone itself can be examined directly.

This doesn't replace whatever formal authentication process your jurisdiction requires — an affidavit, testimony, or a forensic examination in higher-stakes cases — but it gives you a clean, defensible starting point rather than a stack of unlabeled screenshots.

Don't edit the .txt file

It's tempting to open the exported .txt in a text editor and delete messages that seem irrelevant or embarrassing. Don't. Any manual edit to the source file breaks its connection to the original conversation and can be used to challenge the whole exhibit, even for content that was never in dispute. If you need to limit what's shown, use the PDF tool's date-range filter, which produces a complete, unedited transcript for that window rather than a hand-trimmed file.

The same logic applies to redaction: only redact what your court or counsel has told you is appropriate — typically a third party's personal information that isn't relevant to the case — and use a tool that clearly marks the redaction rather than silently deleting text.