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Files June reads and hands back

What June reads from a file you attach, how much of it, what happens to files in a long thread, and the files June makes for you.

Attach a file and June reads it with your message; ask for a document and June hands it back as a file in the thread.

Attach a file

Attach files from the composer (attach files), or share them into June from another app on your phone (the mobile app). Any file type can be attached. On the web, a large photo is scaled down to 2048 pixels on its longest side before it is sent.

The app converts iPhone photos to JPEG; if a photo still arrives as HEIC, it can't be sent: take a screenshot of it and attach that. On the web, a HEIC photo is attached as it is, without a preview and without scaling.

Read the attached lease and list every date I have to act on
Compare the two price lists I attached and tell me what went up

What June reads from each file

FileWhat June gets
PDFThe PDF itself
Image (PNG, JPEG, GIF, WebP)The image itself
Text, Markdown, CSV, JSONThe text, up to 200,000 characters
Excel workbookEach sheet as a table, the first 4,000 characters of each, up to 20,000 in all
PowerPoint deckThe text of each slide, up to 20,000 characters for the whole deck
Word document (.docx)No text taken out: the file goes as it is, and the model may not read it. Attach a PDF export instead
Anything elseThe file as it is, with no text taken out of it

All the files in one message share the 200,000 characters, in order; once they are used up, the rest is left out and June is told so. On the web and in the app, June can still open the file in its sandbox and read the rest there.

The workbook has more rows than you can see. Open it in your sandbox and total column D across every sheet

Files in a long thread

June reads the files of your latest message in full, within the limits above. Files from earlier messages work differently:

  • Text comes back shortened to its first 20,000 characters. On the web and in the app, June is told where the whole file is in its sandbox.
  • A PDF or image comes back whole, and counts toward how much of the thread June reads back.
  • In June's sandbox, on the web and in the app, every message's files have a folder of their own, so June can work on an earlier file in full. In an organization chat, those are the files you attached yourself. Earlier messages' files stay there as long as June still reads the message back (below); after that, attach the file again. In Slack, June has no sandbox.

On the web and in the app, June reads back the newest 500 messages of a thread. If they do not fit about 64,000 tokens (roughly 250,000 characters) less your new message, it drops whole turns, oldest first, each starting from one of your messages, until the rest fits. An earlier file or Google Drive link takes about 4,000 tokens of that. In a long thread with many files, start a new chat and attach what matters, or put the files in a project, where every chat in the project can open them.

Files June hands back

Ask June for a document, a spreadsheet, a chart or a PDF, and it makes the file in its sandbox and attaches it to its reply.

Turn this table into a CSV file I can send to the accountant
  • The file shows on June's reply like one you attached: it downloads, an image opens as an image, and a PDF or a text file (Markdown, CSV, code) opens in the preview panel. A text preview stops at 1 MB.
  • Only what June attaches shows in the thread. A file it made but did not attach stays in its sandbox; ask June to attach it.

Where files live

  • Attached files, yours and June's, stay on the thread.
  • Files June makes stay in its sandbox until nobody has used it for 30 days. A schedule with a sandbox of its own keeps it 7 days after its last run. In Slack, June has no sandbox.

Save to Google Drive

With Google Drive connected, ask June to save what it made to your Drive (Google Drive).

Save the brief you just wrote to my Drive, in the Clients folder

What June does not do

  • It does not summarize the part of a long thread it no longer reads back: those messages drop out.
  • It does not attach a file over 20 MB to a reply: it says so instead. In Slack it makes and attaches no files.