- Free allowance
- The maximum allowed file size is 1024 MiB; uploads are a plain HTTP POST with no account step; files are kept 3 to 100 days depending on size; no total quota is stated on the page.
- Verdict
- fails: quotathe free allowance is too small to matter
- Cost
- free tier
- Identity
- anonymousno card, no phone
- Binding limit
- retention-clampedRetention 3 to 100 days
- Evidence
- documented11 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-12-04checked 2026-11-03 (live); stale on 2026-12-04
| Free tier | The maximum allowed file size is 1024 MiB; uploads are a plain HTTP POST with no account step; files are kept 3 to 100 days depending on size; no total quota is stated on the page. unit mixed; metered on unstated |
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| Price | none stated |
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| Limits | - per-object-cap 1024 MiB per file source
- per-object-cap 1024 MiB/file source
- retention-clamped (binding) Retention 3 to 100 days source
1024 MiB/file; 3-100 day retention driven by size; no accounts so no listing or bulk delete; deletion only by knowing the URL. |
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| Binding | retention-clamped files are kept for at most 100 days (3 days minimum, shorter for larger files), so a stored set expires; the 1024 MiB per-file cap sets the object count |
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| Identity | anonymous no account: uploads are a plain HTTP POST (curl -F file=@...); the page documents no sign-in step |
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| Egress | free direct HTTPS GET from x0.at, no redirect, no metering; Content-Length served correctly and range requests supported. |
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| Per-object cap | 1024 MiB per file (1073741824 bytes) |
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| Retention | Retention 3 to 100 days, scaled by file size via MIN_AGE + (MAX_AGE - MIN_AGE) * (1 - size/max_size)^2, so small files live ~100 days and near-max files ~3 days (100 days) |
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| Interface | rest, rclone rest |
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| Tooling | plain curl multipart: curl -F file=@x https://x0.at/ (also -F keep_name=1, -F id_length=N). ShareX and Hupl configs published. Open-source server: github.com/Rouji/filehost2 (37 stars). No rclone backend. |
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| Composes with | unlimited anonymous uploads at 1 GiB each with random IDs; the only chaining needed is a client-side index of returned URLs. Retention is the binding constraint, not quota. |
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| Reliability | Longest-lived 0x0 derivative still accepting uploads. Provenance is a hobby VPS; no durability guarantee and expiry is silent and size-dependent. Treat as a 3-8 week cache tier, not archive. |
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| Notes | 1024 MiB per file, no account, no per-account cap — unlimited uploads. Retention 3 to 100 days, scaled by file size via MIN_AGE + (MAX_AGE - MIN_AGE) * (1 - size/max_size)^2, so small files live ~100 days and near-max files ~3 days. |
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| Evidence note | documented page read on 2026-11-03: x0.at (The maximum allowed file size is 1024 MiB.; Files are kept for a minimum of 3, and a maximum of 100 Days.; the MIN_AGE + (MAX_AGE - MIN_AGE) * (1-(FILE_SIZE/MAX_SIZE))^2 formula; upload by a simple HTTP POST). Upload and download probes were not run on 2026-11-03; the egress terms and the reliability note are not from that read. |
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| Parsed numbers | - has-free-tier 1
- per-object-cap 1024 MiB
- per-object-cap 1024 MiB
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