Add your RSS file
Drop one or more .rss files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Converting a .rss font to .jsonfeed repackages the same glyphs and metrics for a different delivery target. Free, private, and validated — the file never leaves your browser.
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.Converting a .rss font to .jsonfeed repackages the same glyphs and metrics for a different delivery target. A .rss file is an RSS feed: an XML document listing a channel's recent items, each with a title, link, description and publication date, so that a reader can poll one URL instead of visiting a site. It is the format that made subscribing to a website a thing you could do.
A .jsonfeed file is a JSON Feed: syndication expressed as a plain JSON object with a version, feed-level metadata and an items array, rather than as XML. It exists because most people building feed readers today would rather parse JSON than namespaced XML. For this route the practical draw is parses with a standard JSON library — no namespaces, no entities, no XML pitfalls and distinguishes plain-text and HTML content explicitly — balanced against far less widely supported than RSS or Atom, which is worth knowing before you commit a large batch.
The practical trigger for this conversion is usually a mismatch: with .rss, rFC 822 dates are an ongoing source of quiet parsing failures. Switching to .jsonfeed buys you parses with a standard JSON library — no namespaces, no entities, no XML pitfalls, which is why it is the better fit for feeds consumed by JavaScript clients that would otherwise need an XML parser. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
| Aspect | RSS feed (.rss) | JSON Feed (.jsonfeed) |
|---|---|---|
| Format type | Text-based — characters and structure, so there is no visual quality loss | Text-based — characters and structure, so there is no visual quality loss |
| How it stores data | a single <channel> holds metadata and a flat sequence of <item> elements — there is no nesting | the version field is a URL, which doubles as documentation and as an unambiguous version marker |
| Strongest at | publishing a blog or news feed for subscribers | feeds consumed by JavaScript clients that would otherwise need an XML parser |
| Weak spot | rFC 822 dates are an ongoing source of quiet parsing failures | far less widely supported than RSS or Atom |
| Metadata | channel and item fields — title, link, description, publication date and guid — are preserved. Namespaced extensions such as podcast tags are not carried across | feed and item fields — id, url, title, summary and publication date — are preserved. Attachments and typed HTML content are not represented in every target |
Drop one or more .rss files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
Select .jsonfeed in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if JSONFEED is selectable, the route is real and validated.
Press Convert. The font tables are parsed and rewritten locally with fonteditor-core; glyph outlines, hinting, and kerning survive the trip.
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid JSONFEED file. Outputs keep the original filename with the .jsonfeed extension.
There is no visual quality to lose — rss is text-oriented and jsonfeed is text-oriented, so the question is structural fidelity. Text, ordering, and basic structure are preserved; complex layout, embedded objects, and styling beyond the target's model are simplified.
Yes — the .rss file is processed inside your browser tab and never uploaded. The font tables are parsed and rewritten locally with fonteditor-core; glyph outlines, hinting, and kerning survive the trip. Close the tab and the file is gone from memory.
Supported by micro.blog, NetNewsWire, Feedbin and a number of static site generators; ignored by most older readers and by podcast clients. Novus Convert parses it locally and converts to RSS and Atom, which is the practical way to reach readers that do not speak it.
It depends on the content: the version field is a URL, which doubles as documentation and as an unambiguous version marker. Convert one representative file first and compare before batch-processing a large set.
In .rss, channel and item fields — title, link, description, publication date and guid — are preserved. Namespaced extensions such as podcast tags are not carried across. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .rss → .jsonfeed → .rss is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.