How to send a PSB file.
PSB is what Photoshop uses when a document outgrows PSD. The format starts above 2 GB. quik.space takes PSB byte-for-byte up to its 5 GB ceiling. The recipient opens it in Photoshop with every layer, mask, and smart object intact.
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What is a Photoshop Large Document (PSB)?
Photoshop Large Document (PSB) files use the .psb extension with no single standard MIME type. The format sits in the design category. Typical files run 2 GB - 5 GB, which is well above what most email services will accept as an attachment.
Why you can’t email a Photoshop Large Document (PSB)
PSB is the Photoshop format for files larger than 2 GB. By definition the file is too large for any email service.Slack, Discord, and most other workplace tools have similar caps, often around 1 GB for free tiers and with aggressive per-channel storage limits. Even when the file fits, it counts against the recipient’s mailbox quota forever.
How quik.space handles Photoshop Large Document (PSB)
quik.space takes PSB up to the 5 GB hard ceiling, byte-for-byte. Layers, smart objects, masks, all preserved. The recipient opens it in Photoshop, which is the only major editor that reads PSB. The share page does not preview proprietary design files inline. The recipient downloads the original and opens it in the matching application.
The file lives for 72 hours by default and then enters a 7-day grace period. We do not train AI on your files. We do not share them with third parties. After grace, the bytes are permanently purged from storage. Read the full policy on privacy.
Common use cases
- Send a high-resolution print master PSB to a printer
- Hand off a digital art master to a finishing artist
- Share a billboard-scale Photoshop file with a printer
- Backup a critical PSB master before retouching
Frequently asked
- How is PSB different from PSD?
- PSB supports documents larger than 2 GB or larger than 30,000 pixels per side. PSD does not. Otherwise the formats are similar.
- Will all layers and masks survive in PSB?
- Yes. quik.space stores the file byte-for-byte.
- Can software other than Photoshop open PSB?
- Few editors read PSB. Affinity Photo can open some PSBs. Photoshop is the most reliable option.
- What is the size limit on quik.space for PSB?
- 5 GB hard cap. For larger files, split into multiple flattened TIFFs or use a different service.
Related file types
- Sketch design file.sketch
- Figma file (.fig).fig
- Adobe XD file.xd
- InDesign INDD.indd
- MP4 video.mp4
- QuickTime MOV.mov
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