wsrv.nl — 公开 PNG 图像规格统一与导出

公开URL图像处理服务；已用自有不透明PNG实测PNG/JPEG导出、留边、居中裁切、拉伸及不放大。需允许第三方处理与缓存；其余输入和服务保证仍有未知。

根据公开资料整理 · 尚未被提供者认领。提交者名称和样例测试不是提供者授权、本站认证或持续可用承诺。

Official public URL image service. Evidence records bounded real calls with synthetic opaque RGB PNG, not provider ownership or universal compatibility. This is a GET processing capability, not a connected localhost JSON POST Node.

NavoNavo 是公共能力目录，保留来源、适用条件与使用说明。继续按条件查找 · 认识目录与机器入口

固定版本的深度资料

名片 cap-c05191a17363a98cd90be48e · 版本 2 · 保存此版本引用

资料与来源声明不等于本站实测；未列出的条件仍未知。

结构化配方只按公开声明检查约束与接口，不执行任务或授予权限；缺失记录保持未知，接口兼容不证明实际成功。

Observed public GET contract, not a vendor binary release. cover-jpeg. Only small opaque PNG was measured; JPEG input, alpha/ICC/EXIF, large images, regional availability and total cost remain unknown.

调用方式 / profile：png-cover32-jpeg · 组件版本：public-get-observed-20261031 · 引用此版本与调用方式

已记录条件

operation = image_delivery：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
input_format = png：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
output_format = jpeg：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
invocation_mode = api：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
execution_location = remote：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
runtime_network_required = true：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
auth_required = false：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
account_required = false：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031
input_format = jpeg：未知（可能存在冲突或待复核）。JPEG source input was not exercised in this measurement. 依据：
setup_required = false：支持。Supported within this profile and component version. 依据：wsrv-test-png-cover32-jpeg-20261031

入口与前提

协议: HTTPS GET public-url image transformation
认证: none (observed without auth/cookies/account)
价格是否查明: unknown
配额是否查明: unknown

https://wsrv.nl/

A public source URL with rights to disclose
Recipients: wsrv.nl and documented Cloudflare CDN/cache
Only this bounded opaque-PNG measurement is evidenced; service internals/other client environments unknown

配方 wsrv-png-cover32-jpeg · 修订 1

所需调用能力：

image_delivery

运行前提：

Use an owned, publicly accessible opaque PNG URL. This measured recipe input is64x32; other dimensions are unverified, not a supplier-wide prohibition. Do not send private/local-only inputs.
Allow transfer to wsrv.nl and its documented Cloudflare CDN/cache. Zero retention is not promised.
This fixed profile describes the measured geometry; do not substitute cover, stretch, format or no-enlargement for a different hard target.
Only small opaque PNG was measured; JPEG input, alpha/ICC/EXIF, large images, regional availability and total cost remain unknown.

使用步骤：

Bind the authorized image object to its public source URL and source SHA; do not include credentials in that URL.
Issue HTTPS GET https://wsrv.nl/?url=<percent-encoded-public-url>&w=32&h=32&fit=cover&a=center&output=jpg&q=90&we; retain normal TLS and address checks.
Apply caller output-byte/pixel/time budgets; decode and check actual media, dimensions, SHA and selected geometry against the original source.

输入约定: This measured recipe uses an owned public opaque PNG source64x32/180B; other sizes, source encodings and service maxima remain unknown, not unsupported.
输出约定: jpeg binary response; measured 32x32/576B. This sample byte count is not a universal output limit.
成功检查: HTTP200 alone is insufficient. Verify media, decode, target dimensions, file SHA and crop/padding/stretch/source comparison. Preserve unknown colour/orientation claims.
失败与回退: Return scoped unknown on failure or unmet privacy constraints. Do not silently alter output format, fit, dimensions, budget or recipients; no equally constrained alternative supplier is yet verified.

适用证据

wsrv-test-png-cover32-jpeg-20261031 · 本站执行记录（仅所列检查）

原始来源

原文定位: results[id=cover-jpeg] and its geometry_checks; exact profile png-cover32-jpeg
来源版本: public-get-observed-20261031
内容摘要: 5ed7171c892b986f4af0a7a633132e613b9aafbd043662651eb4faf2d16923a0
采集时间: 2026-10-31T16:39:50.2455267+00:00

Measured public synthetic PNG in exact profile png-cover32-jpeg. JPEG32x32 decoded; Central crop removes corner markers; Center marker bounds12,12,19,19; Measured mean channel error0.748. JPEG input, alpha/ICC/EXIF, large files and general availability remain unknown.

覆盖条件：operation=image_delivery; input_format=png; output_format=jpeg; invocation_mode=api; execution_location=remote; runtime_network_required=true; auth_required=false; account_required=false; setup_required=false

{"record_url":"https://navonavo.com/assets/research-evidence/wsrv-png-20261031-5ed7171c892b986f.json","input_category":"public_synthetic","environment":"Windows x64 HTTPS client; default TLS and original public-address guard; no auth/cookies","result":"passed_bounded_png_input_subset","checks":["JPEG32x32 decoded","Central crop removes corner markers","Center marker bounds12,12,19,19","Measured mean channel error0.748"]}

结构化配方与步骤连接

未知，仍缺条件。只核对公开声明；本站未执行此任务，不据接口兼容推断任务成功。

配方固定引用: cap-c05191a17363a98cd90be48e@2/png-cover32-jpeg/wsrv-png-cover32-jpeg@1
整链声明费用上限（货币最小单位）: 未知

步骤 transform

固定名片与调用方式 · public-get-observed-20261031 · wsrv-png-cover32-jpeg 修订 1

调用方式 / 方法: api / GET
公开入口: https://wsrv.nl/
调用方工具: http_get
需要安装: False
认证: none
可用地区: 未知
执行位置 / 接收方: remote / wsrv.nl
上传 / 留存: True / True
声明费用: 未知
输入格式 / 语义 / 大小: png / owned_public_opaque_png_url / 未知 bytes
输出格式 / 语义 / 大小: jpeg / image_binary_response / 未知 bytes
输出取回: file / client_owned_output
成功检查（尚未执行）: output_schema=decode image/jpeg, dimensions 32x32, bounded bytes and SHA tied to this task; output_contains=source comparison establishes the selected geometry; not an HTTP200-only claim
失败备选（尚未采用）: return_unknown:no_verified_same_constraints_alternative
同版本证据: wsrv-test-png-cover32-jpeg-20261031

仍缺条件或存在冲突（没有入队）

steps.transform.input：io_contract_unknown · 未知，仍缺条件
steps.transform.output：io_contract_unknown · 未知，仍缺条件
steps.transform.invocation.regions：region_unknown · 未知，仍缺条件
steps.transform.invocation.cost：cost_unknown · 未知，仍缺条件
steps.transform.policy.maximum_cost_minor：cost_limit_unknown · 未知，仍缺条件

完整结构、字段、单位、编码、版本、场景策略与备选引用

{
  "contract": {
    "anchor": {
      "card_id": "cap-c05191a17363a98cd90be48e",
      "card_version": 2,
      "profile_id": "png-cover32-jpeg",
      "component_version": "public-get-observed-20261031",
      "recipe_id": "wsrv-png-cover32-jpeg",
      "recipe_revision": 1
    },
    "steps": [
      {
        "step_id": "transform",
        "reference": {
          "card_id": "cap-c05191a17363a98cd90be48e",
          "card_version": 2,
          "profile_id": "png-cover32-jpeg",
          "component_version": "public-get-observed-20261031",
          "recipe_id": "wsrv-png-cover32-jpeg",
          "recipe_revision": 1
        },
        "invocation": {
          "mode": "api",
          "entry": "https://wsrv.nl/",
          "method": "GET",
          "caller_tools": [
            "http_get"
          ],
          "installation_required": false,
          "authentication": "none",
          "regions": null,
          "execution_location": "remote",
          "recipient": "wsrv.nl",
          "upload_required": true,
          "retains_data": true,
          "accepts_private_data": false,
          "cost": {
            "maximum_minor": null,
            "currency": null,
            "basis": null
          }
        },
        "input": {
          "format": "png",
          "schema_id": "https://wsrv.nl/docs/",
          "semantics": "owned_public_opaque_png_url",
          "version": "public-get-observed-20261031",
          "encoding": "percent-encoded GET query source URL",
          "maximum_bytes": null,
          "fields_complete": true,
          "allow_additional_fields": false,
          "fields": [
            {
              "name": "url",
              "type": "string",
              "unit": "URL",
              "required": true
            }
          ],
          "image": {
            "width": 64,
            "height": 32,
            "fit": null,
            "crop_anchor": null,
            "padding_color": null,
            "allow_upscale": null,
            "transparency": "opaque",
            "color_space": null,
            "orientation": null
          }
        },
        "output": {
          "format": "jpeg",
          "schema_id": "image/jpeg",
          "semantics": "image_binary_response",
          "version": "public-get-observed-20261031",
          "encoding": "binary",
          "maximum_bytes": null,
          "fields_complete": true,
          "allow_additional_fields": false,
          "fields": [],
          "image": {
            "width": 32,
            "height": 32,
            "fit": "cover",
            "crop_anchor": "center",
            "padding_color": null,
            "allow_upscale": false,
            "transparency": "opaque",
            "color_space": null,
            "orientation": null
          }
        },
        "retrieval": {
          "mode": "file",
          "locator": "client_owned_output"
        },
        "success_checks": [
          {
            "kind": "output_schema",
            "expected": "decode image/jpeg, dimensions 32x32, bounded bytes and SHA tied to this task"
          },
          {
            "kind": "output_contains",
            "expected": "source comparison establishes the selected geometry; not an HTTP200-only claim"
          }
        ],
        "alternatives": [
          {
            "mode": "return_unknown",
            "reason_code": "no_verified_same_constraints_alternative",
            "reference": null
          }
        ],
        "evidence_refs": [
          "wsrv-test-png-cover32-jpeg-20261031"
        ]
      }
    ],
    "links": [],
    "policy": {
      "data_class": "public",
      "local_only": false,
      "allow_upload": true,
      "allow_retention": true,
      "allowed_recipients": [
        "wsrv.nl",
        "Cloudflare"
      ],
      "region": null,
      "available_tools": [
        "http_get"
      ],
      "authorization_kinds": [
        "none"
      ],
      "allow_installation": false,
      "maximum_cost_minor": null,
      "currency": null
    }
  },
  "assessment": {
    "state": "unknown",
    "execution_state": "not_executed_by_validator",
    "declared_maximum_cost_minor": null,
    "currency": null,
    "links": [],
    "gaps": [
      {
        "gap_id": "recipe-gap-b65b5a43b79d43fcb3409563",
        "code": "io_contract_unknown",
        "state": "unknown",
        "reference": {
          "card_id": "cap-c05191a17363a98cd90be48e",
          "card_version": 2,
          "profile_id": "png-cover32-jpeg",
          "component_version": "public-get-observed-20261031",
          "recipe_id": "wsrv-png-cover32-jpeg",
          "recipe_revision": 1
        },
        "path": "steps.transform.input"
      },
      {
        "gap_id": "recipe-gap-d6e7ed552a11825da4f5658c",
        "code": "io_contract_unknown",
        "state": "unknown",
        "reference": {
          "card_id": "cap-c05191a17363a98cd90be48e",
          "card_version": 2,
          "profile_id": "png-cover32-jpeg",
          "component_version": "public-get-observed-20261031",
          "recipe_id": "wsrv-png-cover32-jpeg",
          "recipe_revision": 1
        },
        "path": "steps.transform.output"
      },
      {
        "gap_id": "recipe-gap-854787f25cd2f64e9a0e669e",
        "code": "region_unknown",
        "state": "unknown",
        "reference": {
          "card_id": "cap-c05191a17363a98cd90be48e",
          "card_version": 2,
          "profile_id": "png-cover32-jpeg",
          "component_version": "public-get-observed-20261031",
          "recipe_id": "wsrv-png-cover32-jpeg",
          "recipe_revision": 1
        },
        "path": "steps.transform.invocation.regions"
      },
      {
        "gap_id": "recipe-gap-209fe52833633de33af5bb45",
        "code": "cost_unknown",
        "state": "unknown",
        "reference": {
          "card_id": "cap-c05191a17363a98cd90be48e",
          "card_version": 2,
          "profile_id": "png-cover32-jpeg",
          "component_version": "public-get-observed-20261031",
          "recipe_id": "wsrv-png-cover32-jpeg",
          "recipe_revision": 1
        },
        "path": "steps.transform.invocation.cost"
      },
      {
        "gap_id": "recipe-gap-11dc1902ad0e589c5ddd5966",
        "code": "cost_limit_unknown",
        "state": "unknown",
        "reference": {
          "card_id": "cap-c05191a17363a98cd90be48e",
          "card_version": 2,
          "profile_id": "png-cover32-jpeg",
          "component_version": "public-get-observed-20261031",
          "recipe_id": "wsrv-png-cover32-jpeg",
          "recipe_revision": 1
        },
        "path": "steps.transform.policy.maximum_cost_minor"
      }
    ]
  }
}

稳定标识: cap-c05191a17363a98cd90be48e
名片版本: 2
资料更新: 2026-10-31T17:29:17.3225938+00:00
原作者 / 提供者: 未知
可用状态: 未知；收录不代表正在接单或有实时库存。
本站收费: 免费；第三方条件另行核对。

输入

Public URL of owned opaque PNG; bounded measurement64x32, not a service-wide size limit

输出

Measured PNG32x32 contain; JPEG32x32 cover; PNG24x16 stretch; PNG64x32 no-enlargement

使用方式

类型: HTTP 接口
入口: 原使用入口
HTTP 方法: GET

鉴权：无。The measured public calls used no account, credential or cookie.

运行前提

Owned publicly accessible source PNG URL
Allow out-of-machine processing and image cache
Recipients include wsrv.nl and documented Cloudflare CDN; respect all recipients and your own source access rules
Normal TLS/address validation and caller receive budgets

代码仓库不是正在运行的 API；网页可打开不证明业务成功。外部命令仅为资料，执行、资料分享和付费需另行授权。

第三方价格与条款

文档注明免费。Official public service is free as-is. No paid API or account was used. Network/hosting/client/maintenance costs and any total task upper bound are not established.

价格来源 · 提供者条款

资料去向

提供者服务器。Provider fetches source image from its public URL and may cache it; documented Cloudflare CDN also participates. Do not submit private/signed credential URLs or assume zero retention.

限制

Zero retention is not guaranteed; local-only/private inputs are excluded
No SLA; repeated bytes in one observation do not establish long-term determinism
No-enlargement64x32 does not satisfy a hard128x128 canvas
JPEG source input/JPEG-to-PNG
Transparency, ICC and EXIF
Large files, general byte/pixel limits and long-term availability
GW07 local POST application and GA05b adoption

仍需核对

JPEG source input/JPEG-to-PNG
Transparency, ICC and EXIF
Large files, general byte/pixel limits and long-term availability
GW07 local POST application and GA05b adoption

提交者报告的验证

提交者报告样例功能通过 · 部分通过

Actual external HTTPS service processed self-generated PNG. Measured PNG/JPEG output formats, dimensions, SHA and source geometry passed; this does not verify all input formats/conditions.

日期: 2026-10-31T16:39:50.2455267+00:00
软件版本: 未知

实际检查

PNG source SHA
Response decode/media/size/SHA
contain/cover/stretch geometry
No-enlargement exact pixels
One repeated result comparison

未验证范围

JPEG source input/JPEG-to-PNG
Transparency, ICC and EXIF
Large files, general byte/pixel limits and long-term availability
GW07 local POST application and GA05b adoption

公开证据

这是有条件的提交者观察。HTTP、安装、执行、输出核对和用户验收分别判断；不计算总体成功率或商业收入。

来源与贡献者

主要公开来源

NAVONAVO bounded public-synthetic PNG measurement · 公开记录 · 2026-10-31T16:39:50.2455267+00:00

提交者自述：NAVONAVO project maintainer。名称未经身份核验，不等于原作者或执行方。

本次来源读取范围

{
  "url": "https://wsrv.nl/docs/",
  "final_url": "https://wsrv.nl/docs/",
  "status_code": 200,
  "title": "Documentation | wsrv.nl",
  "description": "Archived official public documentation reviewed2026-10-31; bounded external synthetic PNG measurement is linked separately",
  "checked_at": "2026-10-31T17:29:17.0949612\u002B00:00",
  "warnings": [
    "cached_official_document_review_no_new_http_request",
    "checked_at_is_cache_review_time_not_http_fetch_time",
    "source_availability_unknown",
    "synthetic_fixture_report_not_used",
    "external_measurement_scope_is_separate_from_documentation"
  ]
}

公开使用观察

暂无公开记录，不代表失败。

有依据的更正与异议

暂无公开记录，不代表失败。

补充观察或有依据的更正

通过同一公开投稿 API 或 MCP 工具提交。只发公开的必要事实，不上传私人任务、身份或凭据。提交者观察不增加商业调用和收益。

更正接口：POST /api/v1/contributions/corrections；观察接口：POST /api/v1/contributions/observations。

{
  "request_id": "replace-with-unique-request-id",
  "public_intake": true,
  "service_id": "cap-c05191a17363a98cd90be48e",
  "expected_version": 2,
  "changes": {
    "summary": "\u6709\u65B0\u6765\u6E90\u652F\u6301\u7684\u66F4\u6B63\u6458\u8981"
  },
  "source_urls": [
    "https://wsrv.nl/docs/"
  ],
  "reason": "\u8BF4\u660E\u65B0\u6765\u6E90\u652F\u6301\u54EA\u4E9B\u53D8\u66F4"
}

字段、版本冲突和观察分阶段契约 · AI 简明接入说明

完整机器记录 · 收录另一项公开能力

补充公开更正或观察

只提交获准公开的必要事实，不填写私人任务、客户资料或凭据。更正是建议，观察是有条件的提交者报告，不自动变成已核事实、商业调用或收入。

提出有来源的摘要更正

报告有条件的公开观察

结构化表单需要JavaScript；不会以其他格式自动发送。仍可使用原HTTP或MCP接口。