500 KB DOCX test file
A Word document of exactly 512,000 bytes, created instantly in your browser. Nothing is uploaded, and there is no sign-up.
Testing a limit? Grab the edge cases too
Need another size or name? Open it in the generator.
What’s inside the file
A real Word document (Office Open XML) that opens in Word, Google Docs and LibreOffice. It is padded inside the document so it stays valid.
- Size: 512,000 bytes = 500 KB (binary) ≈ 0.51 MB (decimal)
- MIME type:
application/vnd.openxmlformats-officedocument.wordprocessingml.document - File name:
dummy-500kb.docx
Will a 500 KB file upload?
How a 500 KB file compares with published limits (verified 2026-09-27):
| Service | Limit | 500 KB file |
|---|---|---|
| Gmail — email attachments (total per message) | 25 MB | Fits |
| Outlook.com — email attachments | 25 MB | Fits |
| Yahoo Mail — email attachments (total per message) | 25 MB | Fits |
| WhatsApp — documents / files | 2 GB | Fits |
| Discord (free) — file attachments | 20 MB | Fits |
| Slack — file upload | 1 GB | Fits |
| Facebook Messenger — files in chats | 100 MB | Fits |
| Notion (Free) — file upload | 5 MB | Fits |
| Trello (Free) — card attachment from computer | 10 MB | Fits |
| X (Twitter) — image | 5 MB | Fits |
| LinkedIn — document post (pdf, docx, pptx) | 100 MB | Fits |
| Shopify — product image | 20 MB | Fits |
| Typeform — file upload question | 10 MB | Fits |
Sources and 40+ more limits (servers, frameworks, cloud storage): file upload limits reference.
Good for testing
- Résumé / CV upload forms
- Document management systems
- Office-file MIME and extension checks
Questions
Is this 500 KB DOCX exactly 512,000 bytes?
Yes. The file is exactly 512,000 bytes (500 KB with 1 MB = 1,024 × 1,024 bytes). If the system you test counts 1 MB as 1,000,000 bytes, use the 500,000-byte button instead.
Will the DOCX file open?
A real Word document (Office Open XML) that opens in Word, Google Docs and LibreOffice. It is padded inside the document so it stays valid.
Is it safe? Where does the file come from?
The file is created by JavaScript in your own browser when you click the button. Nothing is uploaded or downloaded from a server, and the file contains no macros, scripts or personal data.
More about the format: DOCX format guide.