How to batch font-to-svg-path conversion: how to outline many svgs
- Step 1Normalise your source SVGs first — Before any conversion, make each SVG's text live in real
<text>elements with explicitx,y,font-size, andfill. The converter defaults missingfont-sizeto 16 andx/yto 0 — at volume those defaults silently corrupt layout, so set them in your export template. - Step 2Host the shared font at a stable URL — Put the one font your batch uses at a public, CORS-enabled HTTPS URL (TTF, OTF, or WOFF — not WOFF2). Every file in the run will reference the same URL, so font caching makes the second file onward fast.
- Step 3Convert one file, capture the exact settings — Run the first SVG with that Font URL and confirm the output: correct glyphs, correct positions, the expected "Text nodes outlined" count. This is your golden config — the same Font URL applies to the rest.
- Step 4Process the remaining files with the same URL — Feed each subsequent SVG through, pasting the identical Font URL. Because the only variable is the SVG, results stay consistent. Keep filenames meaningful — output is
<stem>-outlined.svg. - Step 5Hash and dedupe in your own pipeline — Outlining is deterministic, so identical input SVG + font yields byte-identical path data. If your catalogue repeats strings, hash each input and skip re-converting duplicates — the tool itself does not cache, so dedup lives in your script around it.
- Step 6Spot-check on a font-free machine — Pick a sample across the batch and open them where the font is not installed. Verify letterforms and positions. Catching a misaligned
text-anchortemplate on file 3 saves you re-running file 300.
What batch means here
Capabilities and non-capabilities, taken from the implementation. The converter is browser-only and single-file.
| Capability | Status | Note |
|---|---|---|
REST /batch endpoint | Not available | Tool is browser-only; not in the server-safe SVG API |
| Multiple SVGs per run | No | One SVG document per conversion |
| Multiple fonts per run | No | One fontUrl per conversion |
| Per-file font override | Via separate runs | Change the Font URL between files |
| Built-in result caching | No | Dedupe in your own pipeline by hashing inputs |
| Deterministic output | Yes | Same SVG + font → identical 3-decimal paths |
| Path-command JSON output | No | Output is an SVG document, not a command array |
Per-file inputs you control
The only two things you provide each run, and how to keep them consistent across a batch.
| Input | Per-file? | Batching tip |
|---|---|---|
| SVG document | Yes — varies | Normalise the export template so every <text> has explicit x/y/font-size/fill |
| Font URL | Usually constant | Host once at a stable CORS-enabled URL; reuse for the whole set |
| Output filename | Derived | Always <input-stem>-outlined.svg — keep input stems meaningful |
Cookbook
Practical staging recipes for outlining many SVGs through a single-file browser tool. Adapt the file lists to your catalogue.
Product-label catalogue, one font
A set of product-badge SVGs all use the same brand font. Standardise the template, host the font once, and run each file with the same URL.
Template per product (generated by your export step):
<svg viewBox="0 0 240 64">
<text x="12" y="42" font-size="28" fill="#0b3">{{name}}</text>
</svg>
Font URL (constant): https://cdn.example.com/Brand-Bold.woff
Run: feed label-001.svg ... label-300.svg, same URL
Out: label-001-outlined.svg ... label-300-outlined.svgChart annotations frozen for a PDF report
Annotations baked into a report PDF must render without the chart font on the report server. Outline each annotation SVG with the report font before assembling the PDF.
Input set: annotation-q1.svg, annotation-q2.svg, ... Each contains: <text x="0" y="14" font-size="12" fill="#333">Q1 +18%</text> Font URL (constant): https://cdn/Report-Regular.ttf After outlining, the PDF renderer needs no font -> identical annotations on every build machine.
Dedupe repeated strings before converting
A catalogue with many repeated labels (e.g. 'SALE', 'NEW') wastes effort re-outlining the same string. Since output is deterministic, dedupe by input hash in your own script.
Pseudo-pipeline (your code around the tool):
seen = {}
for svg in files:
key = sha256(svg_bytes + font_url)
if key in seen: copy seen[key]; continue
out = convert(svg, font_url) # the browser tool
seen[key] = out
→ 'SALE' badge outlined once, reused everywhere.Mixed fonts: split into per-font passes
If different SVGs use different fonts, group by font and run each group with its own URL — one font per run is the only mode.
Group A (Inter): pass with fontUrl=.../Inter.woff hero.svg, nav.svg Group B (Lora): pass with fontUrl=.../Lora.ttf quote.svg, byline.svg Two passes, two URLs. Do not expect one run to resolve multiple fonts.
Validate the template on file one
Confirm positions and the outlined count on the first file before committing to the whole set, so a bad template is caught early.
First file metrics to confirm: Text nodes outlined: 1 (matches expected <text> count) Font: Brand Bold (font parsed correctly) Then, and only then, run files 2..N with the same URL.
Edge cases and what actually happens
Looking for a batch REST endpoint
Not availableFont-to-path is browser-only and deliberately excluded from the server-safe SVG API because it needs the DOM and a remote font fetch. There is no /batch route. Batch by running files through the browser tool one at a time with a shared font URL.
Hoping for path-command JSON instead of SVG
Not availableOutput is always an SVG document with <path> elements, not a JSON array of move/line/curve commands. If you need raw commands, parse the d attribute of the output paths in your own pipeline.
Inconsistent font-size across the catalogue
PartialAny <text> missing font-size is outlined at 16. At volume this produces randomly tiny labels. Fix the export template so every <text> carries an explicit font-size before batching.
Font host rate-limits or blocks repeated fetches
blockedEach conversion fetches the font URL. A host that throttles or lacks CORS will fail mid-batch. Use a stable, CORS-enabled origin you control, ideally with caching so the same font is served cheaply across many runs.
WOFF2 in the batch
invalidThe parser rejects WOFF2. If your shared font is only available as WOFF2, convert it to WOFF or TTF once before the batch — otherwise every file fails to parse the font.
Some SVGs have no <text>
ErrorFiles already exported as paths (no <text>) error with "No <text> elements found to outline." In a script, treat that error as "already font-independent" and skip the file rather than aborting the batch.
Centered labels in the template
By designtext-anchor is ignored, so a centered template shifts every label to start at x. Decide left-edge x values in the template, then the whole batch is consistent.
Large SVGs and tier limits
SupportedFont-to-path is a Developer-tier tool; the Developer SVG file limit is 2 GB, far above any text-bearing SVG. Batch size is governed by your own loop, not a server batch cap, since each run is independent and local.
Frequently asked questions
Is there a batch API for font-to-path?
No. The converter is browser-only and is not exposed on the server-safe SVG API, because it needs the DOM and a remote font fetch. Batch by running files one at a time with a shared font URL.
Can one run convert multiple SVGs?
No. Each run takes one SVG document. Loop over your files in your own workflow, reusing the same Font URL.
Can I use different fonts in a single run?
No — one fontUrl per run. Group your files by font and do one pass per font.
Does the tool cache results?
No built-in cache. Because output is deterministic for the same SVG and font, you can hash inputs and dedupe in your own pipeline.
Can I get path commands as JSON?
No. Output is an SVG document with <path> elements. Parse the d attributes yourself if you need command arrays.
How do I keep a big batch consistent?
Standardise the export template so every <text> has explicit x, y, font-size, and fill, and reuse one stable font URL. Then only the SVG content varies.
What font formats can the shared URL use?
TTF, OTF, or WOFF over a CORS-enabled HTTPS URL. WOFF2 is not supported — convert it first.
What happens to files that have no text?
They error with "No <text> elements found to outline." In automation, catch that and skip — the file is already path-based.
Will repeated font fetches slow the batch?
The browser caches the font after the first fetch, so subsequent files in the same session reuse it. Host the font with proper caching headers for best results.
Is there a per-string character limit?
There is no per-string character cap in the converter itself. The governing limit is the SVG family file size for your tier (2 GB on Developer).
How are output files named?
Each output is <input-stem>-outlined.svg, so keep your input filenames meaningful to track the batch.
Which tier do I need to batch?
Font-to-path is a Developer-tier tool. Batching is just repeated local runs, so there is no separate batch tier — the Developer file limit (2 GB) applies per file. As a post-pass, send the whole outlined set through the metadata scrubber and the SVG minifier to keep a large catalogue lean.
Privacy first
Every JAD SVG tool runs entirely in your browser using the DOM API and Canvas. Your SVG files never leave your device — verified by zero outbound network requests during processing.