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Post Sizes

Exact pixel sizes, aspect ratios and safe zones for every platform's post, story, reel and thumbnail

Unify Dynamics LLC

Documentation
Tools9read-only
Sign-inNoneno account, no key
Data keptNoneprocessed in memory
PriceFreeoptional Pro limits
StatusLiveMCP + REST
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

What size should my Instagram Reel be?
Tools called
platform_spec
What content types do you cover for TikTok?
Tools called
list_content_types
What platforms do you support?
Tools called
list_platforms
Where's the safe zone for TikTok captions?
Tools called
safe_zone_guidance
Fit my 4000x3000 photo to a Pinterest pin
Tools called
fit_dimensions
Compare every platform's vertical full-screen video format
Tools called
compare_across_platforms
What format should I use for a quick how-to video?
Tools called
recommend_content_type
Which formats are 4:5 aspect ratio?
Tools called
search_specs
What's the difference between letterboxing and pillarboxing?
Tools called
aspect_ratio_glossary

About

Framewise is a fully local social-media image/video size & aspect-ratio reference and fit calculator. platform_spec gives one platform + content-type's exact pixel dimensions, aspect ratio, safe-zone guidance and file-size/format recommendations, covering Instagram (feed square/portrait/landscape, Story, Reel, profile picture), TikTok (feed video, in-feed ad, profile picture), YouTube (thumbnail, Shorts, standard upload, channel banner), LinkedIn (image post/ad in three orientations, profile picture, personal banner), Facebook (feed image, Stories/Reels, cover photo, profile picture), X (in-feed image, video, header, profile picture) and Pinterest (Standard Pin, Video Pin, Square Pin). list_content_types and list_platforms browse what's covered. safe_zone_guidance returns just the safe-zone note for a platform + content type. fit_dimensions computes a centered crop-to-fill and a letterbox/pillarbox-to-fit to take an arbitrary source size to an exact target. compare_across_platforms lines up every content type sharing a shape (square, vertical, landscape, or a literal ratio). recommend_content_type suggests fitting formats for a stated goal. search_specs keyword-searches every entry. aspect_ratio_glossary defines core terms. Keyless; fully local; zero upstream calls; nothing stored.

Sources: Hand-curated from each platform's own help-center, business or developer documentation, verified 2026-09-25 (cross-checked against current third-party creative-spec guides where a platform's own pages did not state an exact figure); fit_dimensions is original local computation; fully local, zero upstream calls

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.
Privacy policyTerms

What it can do

9 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Look Up a Spec4 tools
  • Platform specExact pixel dimensions, aspect ratio, safe-zone guidance and file-size/format recommendations for one platform + content-type combination.
  • List content typesEvery content type Framewise covers for one platform, with its aspect ratio and pixel size.
  • List platformsEvery platform Framewise covers, with how many content types each has.
  • Search specsKeyword search across every platform, content type and note.
Fit & Compare3 tools
  • Fit dimensionsComputes both a centered crop-to-fill (scales up, crops the overhang — no bars, loses some area) and a letterbox/pillarbox-to-fit (keeps the whole…
  • Compare across platformsLines up every content type across every platform that shares a requested shape, side by side.
  • Recommend content typeSuggests 2-4 fitting platform + content-type combinations for a stated goal.
Safe Zones & Glossary2 tools
  • Safe zone guidanceJust the safe-zone note for one platform + content type — the area guaranteed not to be covered by the platform's own UI (captions, profile info,…
  • Aspect ratio glossaryDefinitions of core sizing terms: aspect ratio, safe zone, letterboxing, pillarboxing, crop to fill, resolution, bitrate, native resolution,…

Information

PublisherUnify Dynamics LLC
CategoryDesign & creative · Everyday life
LanguagesEnglish
Built forWorldwide
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://framewise.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryWorldwide

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Documentation

Back to top

What Framewise is for

"What size should my Instagram Reel be?", "where's the safe zone on a TikTok video?", "what does a YouTube thumbnail need to be?" — a sourced, always-at-hand reference for the pixel dimensions, aspect ratios, safe zones and file-size/format limits that every platform quietly expects, plus a calculator that fits an arbitrary photo or video to any of them.

What it does

platform_spec gives one platform + content-type's exact pixel dimensions, aspect ratio, safe-zone guidance and file-size/format recommendations, across Instagram (feed square/portrait/landscape, Story, Reel, profile picture), TikTok (feed video, in-feed ad, profile picture), YouTube (thumbnail, Shorts, standard upload, channel banner), LinkedIn (image post/ad in three orientations, profile picture, personal banner), Facebook (feed image, Stories/Reels, cover photo, profile picture), X (in-feed image, video, header, profile picture) and Pinterest (Standard Pin, Video Pin, Square Pin). list_content_types and list_platforms browse what's covered. safe_zone_guidance returns just the safe-zone note — the area guaranteed not to be covered by a platform's own UI or cropped on some device. fit_dimensions takes an arbitrary source width/height and computes both a centered crop-to-fill (scales up, crops the overhang, no bars but loses some area) and a letterbox/pillarbox-to-fit (keeps the whole source, adds bars) to reach an exact target size. compare_across_platforms lines up every content type sharing a shape — square, vertical, landscape, or a literal ratio like "9:16" — side by side. recommend_content_type suggests fitting formats for a stated goal in plain language. search_specs keyword-searches every entry. aspect_ratio_glossary defines core terms — aspect ratio, safe zone, letterboxing, pillarboxing, crop to fill, resolution, bitrate, and more.

What it is not

Not a live feed of platform specs and not affiliated with, endorsed by, or fetching from any of the platforms it references. Every dimension is hand-verified against that platform's own help-center, business or developer documentation as of the connector's build date. Platforms change these numbers — sometimes without much notice — so treat this as a strong, sourced starting point and double-check against the platform's current help pages before a hard production deadline. fit_dimensions is pure local arithmetic; it doesn't touch your actual image or video file.

Privacy policy

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Framewise — Privacy Policy

Effective 25 September 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Framewise is. Framewise is a connector (an MCP server and REST API) that AI assistants and personal agents call on your behalf for a hand-curated, sourced reference of social-media image/video pixel dimensions, aspect ratios, safe zones and file-size/format limits, plus original crop-to-fill/letterbox-to-fit fit math. You interact with your assistant; the assistant sends us only the arguments needed for that one lookup or calculation.

What we receive. The arguments of each tool call — a platform name, a content type, a source width/height, a shape or search keyword — the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant, and a Pro API key if you have one), and standard server logs.

Everything is answered from bundled reference data and/or local computation, and nothing is stored. No request is forwarded to any third party — there is no upstream call at all, live or otherwise — and no query is logged in request bodies, recorded, or used to train anything.

What we do not receive or store. We do not receive your conversation with the assistant or your name, and we do not build a profile from your queries: each request is answered independently and nothing carries over between requests. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting-provider access logs, which contain IP addresses and request paths but not request bodies, are retained for up to 30 days for security and abuse prevention.

Sub-processors. None — the entire dataset is bundled with the server and answered locally. Hosting: Vercel (United States regions).

Legal bases and your rights. Our processing is necessary to provide the service you request through your assistant. Because we store no personal data beyond short-lived logs, requests to access, correct or delete personal data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. We do not sell or share personal information and do not use your data to train models.

Children. Framewise is a general-audience service operated by the adult using the assistant.

Changes. We will post changes here with a new effective date.

Terms of service

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Framewise — Terms of Service

Effective 25 September 2026. These terms govern use of the Framewise connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

  1. The Service. Framewise returns a hand-curated, sourced reference of social-media image/video pixel dimensions, aspect ratios, safe zones and file-size/format limits, plus original crop-to-fill/letterbox-to-fit fit-math calculations. It is accessed through an AI assistant or directly over MCP or HTTP.
  2. Reference, not an official source. Framewise is an independent reference tool, not affiliated with, endorsed by, or fetching live data from any platform it references. Dimensions and limits are verified against each platform's own published documentation as of the build date, but platforms change these without notice — always confirm against the platform's current help pages before a hard production deadline.
  3. Reference, not real-time guidance. Content reflects general, widely published practice as of the build date stated in the Service's own data or responses. It does not know your specific situation, equipment, or context, and it cannot replace judgment formed through experience or professional consultation where relevant.
  4. Acceptable use. Automated use within the published rate limits is welcome.
  5. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time.
  6. Data. Our Privacy Policy describes what we process. In short: your request is answered from bundled reference data and/or local computation, and nothing is stored.
  7. Pro keys. Optional Pro API keys are issued at our discretion, are personal to the holder and may be revoked for abuse.
  8. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss, injury, or damage arising from use of, or reliance on, the Service. Our total liability is limited to US $100.
  9. Governing law. California law; venue in San Mateo County, California.
  10. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/framewise

Support

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Post Sizes support

Email agent@connectorbay.com. We answer within two business days.

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Post Sizes never asks for them.

Get Post Sizes

Free · No sign-in · Read-only

Streamable HTTP, stateless, no authentication. Paste the endpoint into any MCP-capable agent.

https://framewise.connectorbay.com/mcp
{
  "mcpServers": {
    "framewise": {
      "type": "http",
      "url": "https://framewise.connectorbay.com/mcp"
    }
  }
}