# FitFileSize (npm · fitfilesize-mcp)

Compress a PDF or image to fit an upload limit or a form's rules (visa photos, exam forms).

- Trust score: 59/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

## Components

- npm · `fitfilesize-mcp`: 59/100 (this document), [markdown](https://verifymcp.io/servers/gautamstar-fitfilesize/fitfilesize-mcp.md), [page](https://verifymcp.io/servers/gautamstar-fitfilesize/fitfilesize-mcp)

## Channel facts

- Registry: `npm`
- Package: `fitfilesize-mcp`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-26.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 31 of 95 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 0 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 20/100
  - Instruction-quality not yet verified: the AI judgement didn't run.
  - Context-footprint check failed: tool/resource definitions use about 424 tokens (~212/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - Manipulation not yet verified: none of the 2 captured unit(s) of tool text has been judged yet, so we will not certify text no model has read as clean.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the FitFileSize MCP server?

FitFileSize runs locally as an npm package, launched with npx -y fitfilesize-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add gautamstar-fitfilesize -- npx -y fitfilesize-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "gautamstar-fitfilesize": {
      "command": "npx",
      "args": [
        "-y",
        "fitfilesize-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "gautamstar-fitfilesize": {
      "command": "npx",
      "args": [
        "-y",
        "fitfilesize-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add gautamstar-fitfilesize -- npx -y fitfilesize-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "gautamstar-fitfilesize": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "fitfilesize-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add gautamstar-fitfilesize --command npx --arg -y --arg fitfilesize-mcp
```

### Hermes

```yaml
mcp_servers:
  gautamstar-fitfilesize:
    command: "npx"
    args: ["-y", "fitfilesize-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "gautamstar-fitfilesize": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "fitfilesize-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add gautamstar-fitfilesize -t stdio -c npx -a -y fitfilesize-mcp
```

### Other

```json
{
  "mcpServers": {
    "gautamstar-fitfilesize": {
      "command": "npx",
      "args": [
        "-y",
        "fitfilesize-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-26 (score 59)

First indexed and scored.

## MCP tools (2)

### `fit_file` (~365 tokens)

Fit a file under an upload limit

Compress a PDF or image (JPEG, PNG, WebP, TIFF, BMP) on this computer so it fits an upload limit, keeping as much quality as the limit allows, and save the result next to the original as "<name>.fit.<ext>". Give either `limit` (like "200KB" or "1.5MB"; KB and MB are 1000-based, so the file passes a check done either way) or `form` (a form preset from list_forms, like "ibps-signature" or "us-visa-photo-ds160", which sets the limit, minimum size and exact pixels that form requires). The file is uploaded to fitfilesize.com over HTTPS, compressed there, and deleted from the server as soon as the result is saved. Free, no account.

Input parameters:

- `fit` (string): When width and height change the shape: "crop" to fill (default) or "pad" with white.
- `form` (string): A form preset id or name from list_forms, like "ibps-photo". Use this or `limit`.
- `height` (integer): Exact height in pixels (images only).
- `limit` (string): Upload limit, like "200KB", "50 KB" or "1.5MB". Use this or `form`.
- `minimum` (string): Smallest allowed size, like "10KB", for forms that set one. A small JPEG is padded up to it.
- `output` (string): Where to save the result. Defaults to "<name>.fit.<ext>" beside the original.
- `path` (string, required): Full path to the file on this computer ("~/" is allowed).
- `width` (integer): Exact width in pixels (images only).

### `list_forms` (~59 tokens)

List form presets

The upload forms FitFileSize has presets for (visa photos, Indian exam and bank applications, and more), each with its size limit, minimum and pixel size, and the official source of those rules. Pass an id to fit_file as `form`.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/gautamstar-fitfilesize/fitfilesize-mcp#diagnostics

## Score history

- 2026-09-26: 59

## Common questions

### What is the FitFileSize MCP server?

FitFileSize is an MCP server listed in the public MCP registry as io.github.Gautamstar/fitfilesize. Compress a PDF or image to fit an upload limit or a form's rules (visa photos, exam forms). This page covers its npm package (fitfilesize-mcp).

### Is the FitFileSize MCP server safe to use?

FitFileSize scores 59 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 26 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the FitFileSize MCP server expose?

FitFileSize exposes 2 tools: fit_file, list_forms. Their descriptions and schemas cost roughly 424 tokens of context every time the server is loaded.

### Is the FitFileSize MCP server still maintained?

FitFileSize is still listed as active in the MCP registry. We last reached this channel on 26 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the FitFileSize MCP server under?

FitFileSize declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/fitfilesize-mcp
- Socket report: https://socket.dev/npm/package/fitfilesize-mcp
- Repository: https://github.com/Gautamstar/fitfilesize
- Website: https://fitfilesize.com/
- Changelog RSS feed: https://verifymcp.io/servers/gautamstar-fitfilesize/fitfilesize-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/gautamstar-fitfilesize/fitfilesize-mcp.json
- HTML version of this page: https://verifymcp.io/servers/gautamstar-fitfilesize/fitfilesize-mcp