Is this GPX editor free? Do I need an account?
Float GPX Editor is free to use in your browser. You can open, view, edit and download GPX files without creating an account. There is no desktop app to install. JavaScript is required for the map and editing controls.
How is this editor related to SpeedX?
Float GPX Editor is a free companion tool to SpeedX, the iPhone and iPad app for live speed, altitude and trip recording. Use the website to view and edit existing GPX files; use SpeedX to record and review trips on your phone.
The browser editor is free and works without installing SpeedX. GPX import and export inside SpeedX require Pro. Your browser project is not a SpeedX account and is not synced to the app.
Source: SpeedX on the App Store ↗
How do I take my edited GPX into SpeedX?
Download the edited file, transfer it to your iPhone or iPad if needed, then open Trip Log in SpeedX and use its import button. The SpeedX section in the user guide explains the steps. The QR code opens the product website; it does not send your GPX file.
SpeedX imports tracks with at least two valid points, combines each track’s segments and sorts its points by time. It ignores standalone routes and waypoints and fills missing times. Convert routes to tracks first and split sections into distinct tracks when you want separate trips. Keep the original file and check the imported result, especially after reversing a track or adding points.
Which files and sizes can I open?
Import .gpx files in GPX 1.0 or 1.1 format. Tracks, track segments, routes and waypoints are supported. Each file can be up to 10 MiB; a project can contain up to 100,000 points in total, including route points and waypoints. FIT, TCX, KML and ZIP files must be converted or extracted elsewhere first.
Files are checked separately during a batch import. A failed file does not remove other imported files. If you cancel, completed files remain in the project. An HTML download page renamed to .gpx is not a GPX file.
Are GPX files uploaded? Why does the map use the network?
GPX parsing, editing, statistics and export run locally in your browser. The app does not upload your GPX file to a processing server. Projects are stored in this browser on this device.
The OpenStreetMap basemap is a separate network service. Its tile server receives ordinary requests for the map areas you view, together with normal connection information. Local file processing does not mean that the entire page makes no network requests. Cropping a track also does not remove every location or personal detail from preserved waypoints and metadata.
Is local autosave a backup? Can I switch devices?
Projects save automatically to this site’s IndexedDB storage after a short delay. “Saved locally” refers to this browser profile, not a cloud account. Clearing site data, using private browsing or browser storage eviction can remove saved projects. Another device or browser will not receive them.
Download a GPX copy after important changes. To move the track to another device, transfer that file yourself and import it there. GPX preserves exported data, but it does not include your undo history or the full local project workspace. If saving fails, keep the current project open, retry saving and download GPX.
Why is the elevation profile empty or broken?
A GPX file can contain coordinates without elevation. The profile uses recorded elevation only: the app does not fetch terrain heights, fill gaps or smooth noisy samples. New points contain coordinates only. Missing elevations create gaps, and ascent and descent use only adjacent points with known elevations in the same segment.
Why are duration and speed unavailable?
The app needs a valid time on every point and strictly increasing times within each segment. Missing, repeated, invalid or backward times make duration and average speed unavailable. Inserting a point introduces a point without a time; reversing a recorded track preserves original timestamps and can put them in reverse order.
The displayed duration adds the start-to-finish time of each segment, including stops within it. Gaps between segments are excluded. It is not moving time, and editing coordinates does not recreate a recording.
Does merging GPX tracks add a line between them?
No. “Merge tracks” replaces the selected tracks with one track containing their existing segments in your chosen order. Segment boundaries remain separate, and no new connecting geometry is created. Undo restores the input tracks.
To put several tracks in one GPX file while keeping each track separate, choose “All content” or select multiple objects in the export dialog without using “Merge tracks”. Visibility switches only affect the map; they do not filter exports.
Can I snap to roads or automatically plan a route?
The current tool edits existing GPX geometry. Moving or inserting a point changes coordinates directly; it does not calculate a route along roads. There is no place search, turn-by-turn guidance, automatic elevation correction or timestamp generation. A GPX route can be converted to a track for range, split and merge operations; conversion does not add road geometry.
Are time, elevation and sensor extensions preserved?
Original time, elevation and extension data stay with retained points. Moving a point changes its coordinates without rewriting its original recording fields. New points contain coordinates only. Deleted points and their data are removed from that exported geometry.
Current-file exports retain the file’s GPX version. Combined exports use GPX 1.1, storing source metadata and legacy fields in application extensions where needed. Other software may not display those extensions, so inspect the exported file in its intended destination.
Can I edit GPX on a phone?
Yes, in a modern browser with JavaScript, file access and local storage support. Use the Files, Data and Elevation tabs below the map on narrow screens. Select a point first, then switch to “Edit points” to drag its handle. The Data panel also accepts exact coordinates.
Touch editing on a dense track can be easier after zooming in. Device memory still matters for large files; the documented point and file limits apply on phones too.
Can I use it offline or when map tiles fail?
The app is not an installable offline map and does not prefetch map tiles. The page and basemap normally need a network connection. Once the editor has loaded, a tile failure does not stop local coordinate editing or GPX export. Blank tiles do not mean that the track data has been lost.
How do I save the edited GPX file?
Click “Export GPX”, choose Current file, Selected or All content, wait for preparation, then click “Download GPX”. With no checkboxes selected, “Selected” exports the current object. A prepared download uses the snapshot from when you started preparation; prepare a fresh export after further edits.
The browser controls the download location. On mobile, look in the browser’s downloads or the device’s file app. Hiding a track is not the same as excluding it from the export.