Your files, explained.

PosterWeave processes imported files and creates PDFs in your browser. It does not send your artwork to an application server. PDF rendering libraries are served with the app; fonts or images referenced outside an imported SVG are rejected.

Saving a project

In step 1 of the tool, open “Manage saved project” and choose “Save” to store one project, including its files, in this browser’s IndexedDB storage. Other people using the same browser profile may be able to restore it. “Restore” loads that saved project. “Clear saved copy” deletes only the saved copy; your open poster stays. Automatic save and restore is optional and off by default. When you enable it, changes are saved after a short pause and the saved project is restored on your next visit. Turning it off keeps the saved copy; “Clear saved copy” deletes it and turns automatic saving off. Browser cleanup, private mode and storage limits can remove it. Downloads remain on your device until you delete them yourself.

Hosting

The hosting provider may receive ordinary request information such as IP addresses and browser headers when you open this site or load its files.

Analytics and advertising

Analytics is optional. Google Analytics 4 measures visits and actions such as importing a file or downloading a poster. Microsoft Clarity provides masked session replays so we can understand navigation and find confusing steps. Neither service starts before you allow analytics. A new permission is remembered on this browser for up to 180 days, so it can apply on later pages and visits. Keeping it off does not affect the poster tool.

Our usage events contain fixed page names, broad traffic-source categories and a limited set of actions. We do not add artwork, filenames, editor text, feedback text, raw errors or user IDs to those events. Clarity is configured to mask page text, artwork previews and form fields. Masking limits what appears in replay; it does not make analytics anonymous. These services can receive IP and network information, browser/device details, timestamps and analytics cookies or identifiers. Advertising consent and ad personalization are off.

GA4 runs in a separate minimal same-origin document with fixed page information and an empty referrer. This is not a cross-origin security boundary. Clarity runs on the tool and privacy pages, not the Feedback page. Ordinary hosting requests and logs still occur. See Google’s privacy policy and Microsoft’s privacy statement.

Feedback

Feedback is sent only when you select Send feedback and the sending service is available. We send your suggestion and any name or reply email you choose to provide through Resend to the site operator’s inbox. We use it to review suggestions and, if you provide an email, reply. Do not include passwords, payment details or sensitive personal information. No artwork is attached. Draft fields stay in this tab and are not saved automatically. If sending fails, Copy draft lets you keep the text yourself; copying does not send it.

Cloudflare Turnstile checks for automated submissions and receives network and browser information for this purpose. Our hosting provider processes the submission. To limit abuse, Upstash stores hashed network identifiers, counters and submission status, not your name, email, suggestion or artwork. Short-lived counters expire after up to two days; duplicate-prevention records are retained to avoid sending the same uncertain submission again. Shared networks share a limit of 10 submissions per UTC day, with additional short-term and service-wide limits.

Feedback messages remain in the operator’s mailbox until deleted and may also be processed in Resend’s delivery systems under its retention policies. Use the Feedback page to request deletion, including enough detail to identify your earlier message. See Resend’s privacy policy, Cloudflare’s privacy policy and Upstash’s privacy policy.

Limits

25 MB per imported file, 40 megapixels per source image, 8 megapixels per working image/canvas, 20 layers, 100 output sheets and a maximum 5 metre poster dimension. Browser memory can still be exhausted by complex PDFs or unusually large compressed images. HEIC is not supported. Convert it to JPG or PNG before importing.

When browser storage is available, we remember your new analytics choice for up to 180 days on this browser. Older page-only permissions are not reused. Turning analytics off also signals other open tabs on this site to stop; if a tab is suspended, the change is checked when it regains focus. Allowing analytics in one tab does not start it in other already-open tabs until they navigate or reload. If browser storage is blocked or cleared, your choice may not be remembered. Turning analytics off stops new usage events and blocks new analytics requests on that page. It cannot recall requests already sent or guarantee removal of existing cookies. Reloading ends the analytics SDKs running in the page; save your poster before reloading. After you turn analytics off, it stays off unless you allow it again.