Start with Export chat, not a backup database
WhatsApp's Help Center describes Export chat as a way to share a text copy of an individual or group conversation, optionally with media. That exported history is not the same thing as a WhatsApp backup and cannot be re-imported as one. A browser viewer should therefore read the exported TXT/ZIP directly rather than claim to decrypt or restore cloud/device backups.
- On Android, WhatsApp exposes Export chat from the chat menu under More.
- On iPhone, Export Chat is available from the contact or group information screen.
- Keep the original export unchanged if the conversation matters for records or later verification.
Why exported WhatsApp text is not one universal grammar
Common Android exports place a timestamp before a hyphen, while common iPhone exports wrap the timestamp in square brackets. Locale settings can also change date order, separators, 12/24-hour clocks, seconds, and attachment wording. Because WhatsApp does not publish one stable locale-independent TXT grammar, a responsible parser should show what it detected and stop guessing when dates remain ambiguous.
- 13/06/2026 is strong evidence for day/month/year.
- 06/13/2026 is strong evidence for month/day/year.
- 05/06/2026 cannot be resolved from that value alone; confirm the order before date filtering.
Preserve multiline messages and system events
A message can contain line breaks, and WhatsApp also exports system events that do not have a participant name before a colon. The viewer treats a new recognized timestamp as the beginning of the next record, appends continuation lines to the current message, and keeps sender-less timestamped lines as system events.
- Do not split every line into a new message.
- Do not invent a sender for encryption, membership, or group-change notices.
- Keep the original source line number as audit context.
Media matching is only as strong as the exported filename
When media is included, exported message text often contains a filename marker. Matching that exact filename to one selected archive entry is strong local evidence that the file belongs with that message. If the file is absent or two entries share the same basename, the viewer should report missing or ambiguous instead of choosing silently.
- A Media omitted marker has no filename to reconstruct.
- Voice messages may use formats such as OPUS that require a compatible player.
- A ZIP or sharing service can omit some media, especially when the export is large.
Use filtering for review, not to rewrite history
Search, participant filtering, date ranges, message-type filters, and per-message exclusion make large exports practical to review. Those operations should create derived copies only. The original transcript should remain unchanged and clearly separate from any redacted PDF or CSV.
- Anonymize participants when sharing a sample externally.
- Mask phone-number-like text only as a convenience filter and review the result manually.
- Date-limited exports should be labeled as partial records, not complete conversations.
Choose an export format for the next task
PDF is convenient for reading and printing, HTML is useful for a searchable browser copy, CSV works well for tabular review, JSON preserves structured fields, and clean TXT stays close to a plain transcript. A record ZIP can combine the source transcript, derived exports, media index, optional matched media, README, and checksums.
- HTML/JSON/TXT preserve Unicode more completely than a PDF limited to bundled font glyphs.
- CSV cells that look like spreadsheet formulas should be neutralized before download.
- Checksums are useful for detecting later byte changes to packaged files.
Know what a chat export cannot prove
A WhatsApp export is valuable context, but a TXT file can be edited after export and does not carry a cryptographic statement from WhatsApp that every displayed line is authentic. OpenFileTools therefore does not call generated PDFs court-certified or forensic evidence.
- Preserve the original export and device/account records when authenticity matters.
- A SHA-256 manifest proves the exact bytes in your generated package, not who wrote the messages.
- Legal admissibility, discovery rules, employment retention, and compliance requirements depend on the relevant jurisdiction or organization.
References and source documentation
Platform guidance and operating-system behavior can change. Review the linked source when a current requirement matters.
WhatsApp Help Center — How to export your chat history ↗