Figure spec check

Check a figure against journal specs before you submit

Pick a target journal profile, then choose your figure. The check runs entirely in your browser: the file is never uploaded, no image is generated, no credits are spent and no account is needed. You get a line-by-line report of what the file actually contains, plus a separate list of the rules a browser cannot measure.

期刊規格體檢

把準備投稿的圖拖進來，按目標期刊公開的要求逐項對照：格式、像素、長寬比、解析度、印刷尺寸。

整個處理過程都在你的瀏覽器裡完成：圖片由本頁面直接解碼，不上傳、不落盤、也不會發到我們的伺服器。未發表或處於禁發期的圖可以放心使用，關掉標籤頁就什麼都不剩。

把圖片拖到這裡，或點擊選擇

支援 PNG、JPEG、TIFF、WebP —— 本機讀取，不會上傳

這幾項需要你自己確認

未做檢查

以下幾項瀏覽器無法從像素裡測出，所以本頁不做檢查，也絕不會給出「通過」。請回到匯出這張圖的軟體裡逐項確認。

  • 最小字型大小

    期刊通常規定印刷尺寸下字型大小不小於 5–7 pt。要按圖最終印出來的尺寸量，而不是按它在螢幕上顯示的大小。

  • 線寬

    螢幕上看著正常的細線，印出來可能直接消失。多數規範要求最終尺寸下不細於約 0.25 pt。

  • 色彩模式（RGB 還是 CMYK）

    瀏覽器讀不到檔案的 ICC 意圖，RGB 和 CMYK 在這裡看不出任何區別。若期刊按 CMYK 印刷，請到匯出設定裡核對。

  • 字型是否嵌入

    只與向量稿（PDF、EPS、AI）有關。字型沒有嵌入，會在出版方那邊被替換，所有標籤隨之錯位。

  • 灰階印刷後是否仍可分辨

    如果這張圖可能被黑白印刷，請確認去掉顏色後各類別仍能區分——靠明度、紋理或直接標註。

這些數字的來源

取自出版方自己的作者須知。規格會變——投稿前請點開連結，對照最新版本再確認一次。

尺寸
Minimum 1328 × 531 px; keep the same 500:200 ratio for larger images
解析度
Minimum 300 dpi
備註
Preferred files include TIFF, EPS, PDF, or MS Office; avoid unnecessary whitespace.
Elsevier graphical abstract guide
去調整尺寸和留白查看完整尺寸指南

Multiple AI models

GPT Image 2, Nano Banana, Seedream 5, Flux 2 Pro and more — pick the right one per figure.

Up to 4K export

Render at 1K, 2K or 4K for print-ready manuscript output.

Text & sketch to figure

Start from a prompt, or refine a rough hand-drawn sketch.

Free to start

Free account in seconds — every figure is saved to your private history.

Figure spec check

What the report looks like

Screenshots of the checker itself, not generated artwork. The values shown come from one example file; your own report depends on the file you choose and the profile you select.

How the check works

Measured facts first, unmeasurable rules kept separate

Figure spec check report showing warnings on resolution and aspect ratio1

What the browser can actually measure

The file is read as bytes and decoded locally. Pixel dimensions, aspect ratio and file size are exact. The format comes from the leading bytes rather than the filename, so a PNG renamed to .tif is still reported as a PNG. Color and transparency are answered statistically from a downsampled copy, which is enough for a yes-or-no question and keeps a very large file from filling a browser tab.

  • Pixel width and height, and the aspect ratio they imply
  • File format read from the leading bytes, not the extension
  • File size against a soft submission-portal ceiling
  • Declared resolution, and the physical size derived from it
  • Whether any pixels are transparent
  • Whether the artwork is effectively grayscale
Confirm-by-hand group listing font size, stroke width, color mode, font embedding and grayscale print2

What it cannot measure, and says so

A raster image does not carry the information some submission rules need, so those rules are listed in a separate confirm-by-hand group instead of being marked green. Nothing in that group has been evaluated. Reading a green report as though it had cleared them is the one way this tool could send a figure to a desk reject with the author believing it had been checked.

  • Minimum font size — needs text recognition plus a physical conversion
  • Stroke width — the same problem, measured against the printed width
  • CMYK or color intent — the browser cannot read ICC rendering intent
  • Font embedding — a property of PDF and EPS artwork, not of pixels
  • Whether categories stay distinguishable after a grayscale print
Measured facts panel showing format, file size, pixel dimensions, aspect ratio and declared dpi3

A missing resolution is not a broken figure

Plenty of export paths never write a density tag, so the report often shows no declared dpi. That is a warning, not a failure, and it says nothing about whether the pixels are good enough. What decides print quality is pixel width divided by printed width in inches. A figure with no declared dpi and a generous pixel width is usually fine; one that declares 300 dpi but has few pixels is not. When a journal asks for a density value, set it in your export tool and check again.

  • Confirm dimensions, file format, and resolution
  • Review the target venue's AI-use policy
  • Complete a final expert review before use
Figure spec check upload panel with a drop zone and a note that the file stays in the browser4

Where the journal numbers come from

Each profile is derived from the publisher requirements table on the graphical abstract size guide, which carries the official source link for every row. This page deliberately keeps no second copy of those numbers — a spec checker quietly enforcing last year’s rule is worse than none. Open the guide to read the requirement in the publisher’s own wording, and follow the source link before you rely on it.

  • Profiles are generated from the guide table, not typed in twice
  • Every report links back to the publisher source for the selected profile
  • A profile whose source row changes is dropped rather than guessed at

A pre-submission cross-check, not the journal rulebook

This report compares one file with one stored profile. It cannot see the current author guidelines for your journal, its production requirements, the rules for your specific article type, or any instruction an editor has given you. Requirements are revised and they differ between journals from the same publisher. Treat the report as a cross-check to run before submission, and confirm every item against the official author guidelines for the journal you are submitting to.

Figure spec check questions

Related tools and guides

Graphical Abstract Size Guide

Publisher dimensions and resolution, each with its official source link.

Trim Figure Margins

Crop the empty margin around an exported figure, also in the browser.

Figure Recolor

Move a figure onto a color-blind-safe or grayscale-safe palette.

All SciFig tools

Browse tools by output, discipline, and mode.

Journal Figure Resize

Reflow a finished figure into a column, banner, cover or square proportion.

Background Cleanup

Replace a cluttered background with a uniform white, gray or black ground.

全部工具

Run the check before you submit

The spec check above is free, needs no account, and keeps your file on your machine. Sign in when you want the AI tools that fix what it finds.