Tekst is capable of processing a wide variety of file types. This article provides a comprehensive list of all supported file formats and any limitations associated with them.
Supported File Types
| File Type | Extensions | Notes |
|---|---|---|
| Plain Text | .txt | |
| HTML | .html, .htm | |
| Tekst can often recover and process corrupted PDFs. Password-protected or encrypted PDFs cannot be processed. | ||
| CSV | .csv | By default, only the first 1,000 rows are processed. Please contact support if you need to process more rows. |
| Microsoft Word | .doc, .docx | Encrypted documents (except those with an empty password) will not be processed. |
| Microsoft Excel | .xls, .xlsx, .xlsm, .xlsb | By default, only the first 1,000 rows per sheet are processed. Please contact support if you need to process more rows. Encrypted workbooks (except those with an empty password) will not be processed. |
| Microsoft PowerPoint | .ppt, .pptx | Recognized as attachments. Text inside the slides is not currently extracted - convert to PDF if you need the content processed by the AI. |
| Email formats | .eml, .msg | Attachments within these email files are also processed, subject to the same limitations. This includes recursive attachments (e.g., an .eml file attached to another .eml file). |
| Images | .jpg, .jpeg, .png, .gif, .tiff, .bmp, .webp, .heic, .heif | |
| JSON | .json | |
| XML | .xml | |
| ZIP Archives | .zip | Files within a .zip archive are extracted and processed individually. All file types listed above are supported within a .zip archive. |
What's next
Getting help
If you have any questions or encounter issues with file attachments, please don't hesitate to contact our support team for assistance.
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