Guides

Webcomic content uploads

Draft, schedule, and publish page uploads for webcomics and webtoons — try the client-side demo below. Nothing is uploaded or saved.

Last updated: 2026

Where uploads live (for real)

Open Publishing, select a webcomic series, then Add upload — that opens the new-upload editor at /author/publishing/series/[series-id]/chapter/new. To change an existing upload, use the editor at /author/publishing/chapter/[chapter-id]/edit. The sandbox below imitates the editor UI without calling our APIs. For prose novels, see Creating a webnovel and Webnovel chapters.

Interactive preview — Upload editor simulation. Images stay in your browser as previews only.
Publishing / Demo series
draft
Upload 1

Mirrors the live upload editor from Publishing. See Where uploads live on this guide page for steps and URLs to the real tools. Everything below runs in your browser only.

Basics

Upload thumbnail (optional)

Keep your thumbnail all-ages

This image still shows up in upload lists, navigation, and previews even when the upload is age-restricted, so keep it appropriate for all ages—no nudity, sexual imagery, graphic gore, or offensive text in the art. Save mature visuals for labeled comic pages.

Set an upload-specific thumbnail
Drag & drop an image here, or use the upload button. Preview only — not uploaded from this guide.
No thumbnail uploaded
  • Poster style (same as series covers): 2:3 portrait — e.g. 720×1080 or 1200×1800.
  • Wide episode style (common aspect ratios from major platforms): about 10:7 landscape — e.g. 800×560.
  • Most other aspect ratios work too, as long as the image isn’t extremely thin or wide. Square thumbs are fine.
  • PNG for crisp lines/text; high-quality JPEG or WebP for photos/color.
If no chapter-specific thumbnail is set, the series cover may be used elsewhere.

Visibility & content

Comments
Reactions
Content warnings

Readers see a notice before they open the upload. If this upload includes nudity or sexual content, check Sexual themes (and Age-restricted above).

Scheduling

Choose when you want this upload to go live, in your own local time. Then use Schedule… in the header when publishing for real.

Reading semantics

Format: webtoon • Direction verticalInherited from your series on Inkstra; not editable per upload. This demo assumes a webtoon / vertical series.
Pages
Image tips for Webtoon
  • Use tall, scrolling images. Recommended width 800–1080px; height can vary.
  • PNG for crisp text/lines; high-quality JPEG is OK to reduce file size.
  • Images over 1500px in height are automatically sliced for loading; they still render as one strip and you can reorder slices if needed.
  • Page order is the order you add images; you can reorder anytime by dragging.
Uploaded pages may be optimized for faster loading; they should look the same in the reader.
No pages yet. Click Add images… to upload (or drag & drop images here).

    Recommended series (optional)

    Optional. In the live editor you search for any public series on Inkstra. Readers see a card below the previous/next upload buttons: “The author thinks you would like …” Leave empty to skip.

    Upload thumbnails

    • Poster style (same as series covers): 2:3 portrait — e.g. 720×1080 or 1200×1800.
    • Wide episode style (common aspect ratios from major platforms): about 10:7 landscape — e.g. 800×560.
    • Most other aspect ratios work too, as long as the image isn't extremely thin or wide. Square thumbs are fine. Keep thumbnails all-ages safe in lists.

    States & pages

    • Draft — work in progress until you publish or schedule.
    • Scheduled — set a release time; the live editor validates and queues the upload.
    • Published — visible to readers per platform rules and gates.
    • Pages — upload ordered images in production; here you only attach local files for a thumbnail preview.

    Recommended series (optional)

    In the upload editor you can pick another public, approved series to recommend when readers finish this upload. It appears in the reader below the previous/next navigation as “The author thinks you would like …” with cover art, description, and an age-restricted badge when needed. You cannot recommend the same series this upload already belongs to.

    Age-restricted & content warnings

    Mark an upload Age-restricted (18+) when it's for adults. Nudity and sexual content can appear in the comic if you also check Sexual themes. Thumbnails still need to stay all-ages in lists. Sexual or nude depictions of minors (including characters who look underage) are never allowed, and we may remove fetish content if it crosses a line. The editor preview below uses the same wording as the real form. See our Terms.

    Reader URLs

    Uploads are read at /reader/c/[chapter-id]. Series pages use /series/[slug].