File limits for every tool
The exact batch, file-size and dimension limits each Localcraft tool enforces, read from the same constants the tools check your files against. No surprises after you press run.
Why limits exist
Localcraft tools run entirely in your browser tab, so the ceiling is your device’s memory, not a server quota. These limits are the exact constants each tool validates against before it starts — the same numbers you see inside each dropzone. If a file is over a limit, the tool tells you at the moment you choose it, not after a long processing run.
The table
| Tool | Files per batch | Per file | Batch total | Also |
|---|---|---|---|---|
| PDF tools — one shared limit set for all nine | ||||
| Compress PDF | 20 | 20 MB | 80 MB | 500 pages per document |
| Split PDF | 20 | 20 MB | 80 MB | 500 pages per document |
| PDF to Word | 20 | 20 MB | 80 MB | 500 pages per document |
| Word to PDF | 20 | 20 MB | 80 MB | 500 pages per document |
| PDF to image | 20 | 20 MB | 80 MB | 500 pages per document |
| Fill PDF form | 20 | 20 MB | 80 MB | 500 pages per document |
| Rotate PDF | 20 | 20 MB | 80 MB | 500 pages per document |
| PDF watermark | 20 | 20 MB | 80 MB | 500 pages per document |
| PDF page numbers | 20 | 20 MB | 80 MB | 500 pages per document |
| Documents | ||||
| PDF merge, extract & images to PDF | 20 | 20 MB | 80 MB | 500 pages |
| DOCX converter | 20 | 20 MB | 80 MB | 500 pages |
| Images | ||||
| Image converter | 12 | 20 MB (HEIC 10 MB) | 60 MB | 24 megapixels · 12,000 px per side |
| Compress images | 12 | 20 MB (HEIC 10 MB) | 60 MB | 24 megapixels · 12,000 px per side |
| Remove image metadata | 12 | 20 MB (HEIC 10 MB) | 60 MB | 24 megapixels · 12,000 px per side |
| HEIC to JPG | 20 | 20 MB | 80 MB | 24 megapixels |
| WebP converter | 20 | 20 MB | 80 MB | 24 megapixels |
| Bulk product image resizer | 20 | 20 MB | 80 MB | 24 megapixels per image |
| Image DPI & print checker | 20 | 20 MB | 80 MB | Checks only — files are never modified |
| Background remover | 1 | 5 MB | — | Local AI model downloads once (~473 MB) and is cached |
| Image watermark remover | 1 | 20 MB | — | 24 megapixels |
| Video & audio | ||||
| Video converter | 4 | 150 MiB | 250 MiB | Media engine (~32 MB) downloads on first run |
| Video to GIF | 4 | 150 MiB | 250 MiB | Media engine (~32 MB) downloads on first run |
| Trim video | 4 | 150 MiB | 250 MiB | Media engine (~32 MB) downloads on first run |
| Audio converter | 4 | 150 MiB | 250 MiB | Media engine (~32 MB) downloads on first run |
| Video watermark remover | 1 | 100 MB | — | Short clips work best |
| Screen recorder | — | — | — | No file input: the recording is captured and held in browser memory; very long recordings are limited by device memory |
| Subtitles & data | ||||
| SRT & VTT subtitle checker | 20 | 20 MB | 80 MB | UTF-8 |
| Subtitle converter | 20 | 5 MB | 20 MB | UTF-8 |
| Data converter | 10 | 5 MB | 15 MB | One workbook per run; workbooks up to 5 MB |
| JSON workbench | — | — | — | Pasted or loaded input up to 5 MB |
| Text utilities | — | — | — | Input up to 5 MB |
| Markdown converter | — | — | — | Input up to 5 MB |
| Word counter | 1 (.txt) | 5 MB | — | Or paste text directly |
| AI tools (bring your own key) | ||||
| AI image analyzer | 1 | 5 MB | — | Sent only to the provider you choose |
| AI data analyst | 1 (CSV) | 5 MB | — | Parsed locally; only a schema summary is sent |
How to read the numbers: the enforced constants are binary — a “20 MB” ceiling is checked as 20 × 1,048,576 bytes (20 MiB) — so the real ceiling is never below the labelled figure, and the media tools label theirs in MiB directly.
Need more headroom?
Heavier batches and larger files are part of the planned Localcraft Pro tier — see pricing. Every limit above applies to the free tools exactly as published, with no account and no upload: see how local processing works.