Attaching files to a chat

Written By Paolo Rufrano

Last updated About 2 months ago

The paperclip button in the chat box, Add files & photos, attaches documents and images to a message.

What you can attach

Type

When

PDF

Always

PNG, JPEG, WebP

Only when the selected model accepts images

Limits: up to 2 files per message, 5 MB each.

Attaching files isn't restricted by plan. Free accounts can do it too.

Why images are sometimes rejected

Not every model can see. If the model you've selected is text-only, image files are refused and you'll see:

File type not supported. Please upload PNG, JPEG, WebP images or PDF files.

The fix is to switch model. In the model picker, look for the small image icon on a model card (Upload images), or filter under Accepts (Input) → Images. See Choosing a model.

PDFs work on any model, because they're read as text before the model sees them.

The other messages you might see

File size exceeds 5 MB limit.

Compress the file or split it. For a long PDF, consider putting it in a project instead. Project files are indexed and searched rather than sent whole, which handles much larger documents. See Projects: instructions, files and memory.

Only a maximum of 2 files allowed.

Send them across two messages, or use a project.

How PDFs are read

PDFs are processed with text recognition before the model sees them, so scanned documents and images of text work, not just PDFs with a text layer. Percy Chat compresses the file on your device before uploading, which helps larger documents fit under the 5 MB cap.

Reading a PDF costs credits, as part of what the message costs. Long documents cost more.

In the conversation

Attached images appear inside your message and open full-size in a new tab when clicked. PDFs appear as a row with a PDF tag. Before sending, each attachment has a Remove file button if you change your mind.

Managing files you've uploaded

Go to Settings → File Attachments for everything you've ever attached, with file name, type, size and upload date. Each row has:

  • Go to chat jumps to the conversation it was attached to

  • View file opens it

  • Delete attachment removes it permanently

Files in projects vs files in chats

Chat attachment

Project file

Scope

One message

Every chat in the project

Limit

2 per message, 5 MB

5 per project, 5 MB

How it's used

Sent whole with the message

Indexed; relevant passages retrieved

Best for

One-off questions about a document

Reference material you'll come back to

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