BUSINESS / FREE TOOL

GST filing prep

Prepare, label, and size a document bundle for filing.

On this device

Drop your files here

Or choose files. Up to 100 MB per file.

Choose files

Attachment limits

GST refund attachments: up to 10 PDFs, each up to 5 MB. You can edit the limits below to match your portal.

Sources and filing guidance

These attachment limits apply to refund applications RFD-01 and replies RFD-09.

This tool prepares supporting PDFs. GSTR-1 return preparation uses invoice data and an offline JSON upload; a PDF bundle does not replace that return.

Official attachment guide ↗Official GSTR-1 guide ↗

Requirements checked 5 October 2026. Your portal’s current limits take precedence.

Make it yours

Output style

Reduce each attachment’s size before filing.

Compare options

Choose the way this tool processes or arranges the output.

Compress: Reduce each attachment’s size before filing.
Split: Divide a document into smaller attachments.
Merge: Combine the selected documents into a single PDF.
Verify: Report file size and attachment-count checks without changing the documents.
Batch: Prepare a labelled batch of attachments and check configured limits.

Attachment size limit (MB)

Maximum output size in megabytes. A page that is larger than this limit must be compressed before it can fit.

Maximum attachments

Maximum number of attachments to allow in this filing bundle. Set the limit required by the receiving portal.

Annexure label

Label attached to prepared output filenames, such as Annexure. Set size/count limits to the current portal requirements.

Use temporary cloud processingFiles are uploaded for this job and expire within one hour.

Choose a file to begin.

No platform watermark is added. Your source files stay unchanged.

How to use this tool

Choose the operation and set the attachment size/count required by the receiving portal.
The tool prepares documents and reports configured limits. It does not submit a GST return or decide statutory filing eligibility.

Where are my files processed?

The badge shows the selected processing location. Local jobs stay on this device. Cloud jobs require the cloud option and use temporary storage.

How do I save the result?

When the tool finishes, preview the result and use Download. Your original files stay unchanged. Use ZIP to save a batch together.

How do I clear my workspace?

Use Privacy & local data in the sidebar. AI keys can be forgotten separately from AI settings.

How did this tool work for you?